Karen and Abby had talked about what had happened after Todd had left but it wasn�t really mentioned again. Karen didn�t forget it though. She had relived the experience thousands of times in her mind. The feeling between her legs that day had driven her to begin to feel around between her legs herself. Quickly she learned how to bring herself to orgasm. Initially she had tremendous guilt about the pleasure she felt and what she was doing to cause such pleasure. Each time she vowed to herself it would be the last time she would do such a thing. Somehow she would break her vow, usually within three days.

As her body began to change, her feelings about �doing herself� changed also. It was now a nightly ritual for her, if not more often. It seemed every time she pulled her panties down, whether to change, bath, or whatever, she had to have an orgasm or else she would be miserable until she did.

Karen�s body was also developing. The few stray hairs she had only a few months ago had transformed into a fine, but full bush. Granted, it was no where near what an adult woman would have, but it was enough to form a dark triangle between her legs. Her breasts had also grown, along with her nipples, to the point where it was obvious under her tee shirts.

Abby and Karen continued to spend weekends together, alternating houses. Karen liked spending the weekend at Abby�s house better than having Abby come to hers. Todd was at Abby�s house. It may have just been her own hormones but, to Karen, Todd was changing too. He seemed to be more muscular, more handsome, more of a boy. Karen knew her body had changed and wondered if Todd�s had changed too.

Karen�s big day had finally come. She rushed over to Abby�s. Karen knew Abby�s father would be working and she saw Abby�s mother leaving the house as she walked up. Abby�s mother told her she was going to the store and would be back in about an hour. Karen waved goodbye and knocked on the door.

Abby answered and as soon as she had closed the door behind Karen, Karen shouted, �Look!�

Abby spun around to see Karen standing and holding her shirt up around her neck. �You finally got one!� Abby exclaimed.

Karen smiled. She was now a �woman�. Proudly she showed off her first bra. Normally she would be much more conservative but she had to show someone and couldn�t, obviously, show just anyone. Girls weren�t supposed to show off their bras but Karen was proud and felt comfortable with Abby seeing her in just a bra. �My Mom just bought it for me today! She finally thought I had grown enough to wear one,� Karen boasted.

�Nice!� came a voice from the hall. Todd usually wasn�t there when Karen came over for the weekend, at least in the afternoon.

At first Karen froze in shock. She hadn�t even thought of Todd. Quickly she recovered and pulled her shirt down. �Aww�� Todd teased.

�Pervert!� Abby snapped.

�What�s the big deal?� Todd smirked. �It�s just underwear.�

�Yeah? Well if it�s no big deal, then pull your pants down and show us your underwear!� Abby challenged.

�Yeah, right! I would if you guys would do it too, but I know you won�t,� Todd returned.

�Uh-huh� you�re just afraid we�ll see you stiff! You�re always stiff when she�s here,� Abby jabbed. With a glint in her eye, Abby unsnapped her jeans and pushed the zipper down, revealing the top of her bikini panties. �There, I started. You want us to pull our pants down? Pull yours down first then!� Abby challenged.

�Yeah, you�ll do it, but will she?� Todd answered looking at Karen.

Karen�s mouth opened but Abby spoke first. �Of course she will, but she won�t have too because you won�t do it!�

Karen couldn�t believe what was happening. She was happy about getting a bra finally and wanted to �celebrate� with Abby. Instead it had caused a full blown sibling argument. The worst part was Karen was already being drawn into the argument� and was at risk of loosing her pants! She opened her mouth again to say something but was interrupted again � this time by Todd.

With almost lightning speed, Todd had unbuckled his belt, unsnapped his jeans, pushed the zipper down, and pushed his jeans to his knees. �Ha! Let�s see who�s chicken now!�

Karen�s jaw dropped. Todd stood before her, his jeans at his knees, and his white briefs tented out by an obvious erection. She turned away in embarrassment only to see Abby with her jeans at her knees too.

�Looks like I win,� Todd grinned.

Abby looked puzzled for a moment until she noticed Todd looking at Karen. She turned to see Karen just standing, fully covered. �Karen!� Abby said softly but boldly. Karen looked, but stood motionless. �Pull your pants down! Don�t let him win!� Abby hissed.

Karen�s gaze dropped to the floor. She had wondered about Todd but never expected to be stripping for him. �Karen�� Abby grumbled again.

Karen felt her face flush as she reached for the snap of her jeans. Slowly she undid them and pushed them to her knees, revealing a pair of flowered briefs. She wished her mother would let her wear bikini panties; especially now. Karen was embarrassed but wasn�t sure what was worse � having Todd see her in just panties or having Todd see her in flowered briefs.

�There!� boasted Abby with a smug look. Todd didn�t say anything. Karen, out of curiosity, looked up at him. Although he still had his underwear on, she could tell he had grown. Looking up at his face, Karen thought the anger had left. She looked at Abby and the rage was obvious.

Todd then did something unexpected. He pushed his jeans down and stepped out of them, leaving them in a heap on the floor. Abby�s movements drew Karen�s attention. She watched as Abby too shucked her jeans. Her jeans now on the floor too, Abby glared at Karen. Obediently Karen stepped out of her jeans, not wanting to risk Abby�s wrath.

Karen blushed when she looked up to see Todd smiling at her. Although embarrassed, she smiled back at him. Quickly she broke eye contact with him again and lowered her gaze, keeping his underwear in view however.

Todd�s attention turned back to the still angry Abby. �OK, think you�re pretty good, huh? Let�s see how brave you are then. If you guy�s will do it too, I�ll take everything off.�

Abby thought for a moment. �Let�s up the stakes, chicken! We�ll take our clothes off but you have to lick us too!�

�You�re on� but you have to strip first,� Todd conditioned. In truth, Todd was beginning to get a little uneasy. He had a little crush on Karen and wouldn�t mind seeing her naked at all but he could see she was very embarrassed. He knew Abby would never consent to his addition to her challenge.

Karen�s and Todd�s jaws both dropped as Abby pulled her tee shirt over her head and reached behind her to her bra strap. Quickly her bra hit the floor. She then pushed her panties down with a deliberate motion, kicking them into the air. She stood for a moment with her hands on her hips. �Well? You gonna chicken out now?� she growled at Todd.

Todd was getting a little uneasy now. He never expected Abby to go as far as she had. �Um� you did it but she hasn�t,� He answered, pointing at Karen.

�She probably doesn�t think you�ll do your part. You will, right?� countered Abby.

�Yeah,� Todd mumbled.

�OK, Karen, you heard him. Get ready to get licked!� Abby sneered.

The last thing Karen wanted to do was to strip but she knew how Abby got when she was angry, and she was about as angry as Karen had ever seen her. Hoping to defuse the situation, Karen pulled her top over her head. Soon her bra and panties joined the pile of clothes on the floor. Karen moved her hands in an attempt to cover her nakedness, trying not to look like she was covering herself at the same time. Awkwardly one arm went across her chest and the other moved in front of her now hair covered pussy. Thinking she�d look more natural, she folded her arms across her chest and moved slightly behind Abby, hoping Todd�s vision would be blocked.

�Your turn,� Abby grinned.

Todd set his jaw and began undressing. Karen, still embarrassed by being naked in front of him, wanted to look away but couldn�t. She flushed slightly as his underpants hit the floor, revealing a cock which was bigger than she remembered. He also seemed much hairier too. Todd straightened up, grinning at his sister.

His erection stood straight up along his stomach. Karen stared at his crotch in both shock and amazement. She hadn�t even realized her arms had dropped a little, revealing her growing nubs.

Todd looked over Abby before turning his attention to Karen. She had moved away from Abby slightly. He could now see a dark patch of hair over what used to be bare. Her tits, once little bumps on her chest had rounded out and, what he considered, well formed. He could feel his prick throbbing.

Abby�s mood had calmed also. �I don�t want you to lick me. That would be nasty to have my brother do, so you only have to lick Karen.� Turning toward Karen, Abby added, �Lay down so he can lick you, lucky girl.�

Suddenly Karen felt scared. Intertwined with her fright was curiosity though. She had overheard two girls talking and one had told the other that getting licked was �the best�. Still, Karen wasn�t sure if she was ready for that experience. Abby spoke again, breaking Karen�s trance. �Lay down! He can�t do it with you standing up.�

Karen nervously dropped slowly to the floor. The butterflies in her stomach were going crazy as she stretched out on her back, keeping her legs closed. Fear gripped her as Todd knelt down at her feet. Karen drew her legs up to make room as he crowded her. She looked into his face and could see his concern for her but also saw lust in his eyes.

Abby knelt at Karen�s side. �Well, you gonna lick her or not?� She challenged Todd.

�Yeah, don�t rush me!� Todd snapped nervously. Slowly his hands reached out and grasped Karen�s knees. She jumped at his touch but didn�t say anything.

�Well?� Abby pushed.

Todd applied a little pressure to Karen�s knees. She could have resisted him easily but let her legs fall open. Her actions made her blush but Karen rationalized she had no choice. Todd stared down at Karen�s now very exposed slit. As he inched up closer, Karen moved her feet so she was straddling him. As he slowly leaned forward, Karen felt as though her whole body was turning red with embarrassment. No one had ever come that close to her most private place. Threw the humility though, was a tinge of excitement.

Karen leaned back, trying to block out what was happening. She was flat on her back, her legs now spread wide open, and a boy was eyes were only inches from her pussy. She felt completely exposed. The urge to watch suddenly hit her. She propped herself up on her elbows. Todd�s face disappeared between her bent legs. His hands moved up and pushed on her inner thighs.

The silence was broken by a soft giggle from Abby. It gave a slight distraction to Karen from what was happening. She looked over to see Abby smiling, staring at her wide open, boy covered crotch. Karen jumped as something wet ran gently up her slit. A gasp came out of her as she felt it again. Once again, Karen�s face turned scarlet. This time not because a boy was licking her pussy but because she liked it. Contradiction was spinning out of control in her mind. She was embarrassed, humiliated, and loved what was happening.

The third time she felt it was harder. Karen could feel her pussy lips parting. It hit her little button and she jumped. She wanted to snap her legs closed but also wanted Todd to keep going. He hit her clit again and Karen�s hips bounced. Try as she might, she couldn�t help herself.

Todd finally sat up. Karen didn�t move; her legs still wide open. Her face was flushed. Her chest heaved with every breath. She had just been humiliated beyond belief; and had loved it!