Sound Smart, Sen
by tannim
April 15, 2015

	Sen flopped back in his seat.  A substitute.  That meant a nice easy class.  She looked a fair bit better than the elderly Mr. Vonosliv, too.  Another plus.  Alpacas were always so cute.

	"My name is Miss Lodner." She looked around at the class of thirty, which was already breaking down into chattering groups at the sight of a substitute. "My, quite a large class. I don't think conventional methods will work for such a group, so I want to try something different to keep everyone focused."

	 The alpaca's hands tugged at her sweater and pulled it off, showing that she wore nothing underneath. "This is a biology class, you may as well get to know biology.  There is nothing to be ashamed about with biology.  We are all biology," Miss Lodner dropped her pants next, to show a very thickly pubic hair covered groin, "and our biology can be used in a variety of ways." The woman smiled at the sudden silence in the classroom. "Ah, I see everyone is already much more focused."

	Sen, like many others, sat up perfectly straight in shocked surprise.  The silence lasted for nearly a minute while the woman went over the syllabus left to her.  None of the students really heard her, other than that they were supposed to have a quiz.  All eyes were roaming over her mature body and the thick pubic and armpit hair she sported.  Many had never seen a fully nude mature female, let alone a pretty, if mature, alpaca.

	"Since I don't feel like wasting everybody's time with a quiz, how about we just make a game of it.  I'll ask the questions and choose one of you to answer.  Correct answers are rewarded," The camelid sat on the teacher's desk and swayed her long neck to the side with a hint of a smile on her muzzle. "incorrect answers will punished." She looked around, then pointed right to Sen, near the middle of the class. "You, which Phylum is an armadillo in."

	Sen gaped at her, still too busy ogling her to think clearly. "Um... the what?"

	Miss Lodner laughed and lifted a box from the desk onto her lap, spreading her legs for all to see between. "Just guess something."

	"Uh... mammalia?"

	"Nope.  THAT is the class.  The phylum would be chordata, because armadillos have a spine." The box clicked when she opened it and she selected a long smooth metal rod that was curved at one end with a handle on the other. "I guess that means you receive a punishment."

	She set the box aside and carried the rod over, flicking her tail excitedly behind her.  The class was quiet, all of them curious as to what was going to happen.  Sen watched her worriedly and flinched when she swung the rod at his hand.  She only lightly tapped it against his palm, though.

	"Don't worry... What's your name, donkey?"

	"Sen!"

	"Don't worry, Sen.  There won't be anything unpleasant about the punishment.  You're just going to perform a very intimate procedure on yourself to help you remember Chordata..." The alpaca crouched until her breasts rested on his knees, then worked his belt buckle open and the button to his pants, too. "That rod is going down your penis."

	"Hey, WHAT? No! Stop that!" The teenage donkey grabbed her wrists. "You are NOT shoving something down my dick!"

	"You are correct. I am not.  You are going to.  It will feel very good, too."

	"No it... how would it feel good?"

	Miss Lodner tugged his zipper open. "You like rubbing the outside.  Wait until you try rubbing the INside. Oh, but first it needs to be lubricated... Hang on."

	Some students laughed nervously at her standing up and slipping the smooth rod into her pussy.  Others stared quietly.  Sen just gaped open mouthed at her, cheeks flushed.  His dick was stiff from the sight as well as from her hands groping him to open his pants.  The idea of pushing something down his cock hadn't really occurred to him before.  It definitely sounded interesting, if it didn't hurt.

	The alpaca pulled the rod out of her pussy and offered it to him. "Drop your pants and undies and gently push this down your cock.  Take your time, this is a long class."

	Sen stood up and dropped his pants as told.  He was too overwhelmed by the situation to be worried about the other students seeing his bare thighs and buttocks.  There was a naked teacher, who was pretty sexy, with her breasts touching him that wanted to play with his cock, or at least make him play with it.  That was enough for any teen.  The others in the room were tuned out completely when she handed him the urethral sound.

	It was somewhat more than twelve inches long as far as he could tell, but not quite as thick as his smallest finger.  Thinking about it compared to his urethra, though, it was huge.  The donkey wasn't sure it would even fit, until he tentatively poked it against his raised equine cum slit.

	Miss Lodner's pussy juice had made the already very smooth metal very slippery.  The sound popped into the hole with only a little resistance.  A lack of pain let him relax back into his seat.

	"That's right, the first half inch is easy, isn't it? Go slowly, push it in and pull it out... just how you'd like to push your cock into me, I'm sure."

	Sen's cheeks flushed at the thought and he did as he was told.  It really was a weird sensation pushing the rod down his dick.  He felt like he was being invaded.  His body told him to pull it out.  His cock told him it didn't feel good, but it also told him it didn't feel bad.  There was no friction, just a unique fullness and a unfamiliar presence inside.

	The feeling got a bit less unfamiliar with his hand pumping the metal in and out again.  When he reached the top of the curve, though, it got harder again.  His penis was too stiff from the excitement of his teacher and the thrill of doing something new with it to bend easily.  He looked up to her.

	"It's not going to fit with that bend in it."

	"Nonsense." Miss Lodner crouched down again and rubbed over his cock, not helping it soften at all. "You're turgid, but there's room to flex still no matter how erect you get.  Work it in a few times and then gently push down.  Class, anyone who wants a better look is welcome to gather around to see."

	The donkey couldn't ignore the others when they crowded him, but he wasn't going to stop after sinking it in so far.  He wondered if his cock really would make room for it.  The odd thrill of  penetrating his urethra full encouraged him, too.

	There was discomfort when he pushed it past the bend, making him stop several times, but after more trial thrusts, the ache faded and the smooth metal slipped further in.  Sen gripped his chair with his free hand once he passed that difficult part and found himself  breathing as hard as if he were masturbating.

	Another few centimeters passed into his urethra, then a couple more.  He had a hard time keeping his hand steady the deeper he went.  Thrusting it in and out was the only way to progress he found.  The lubrication needed time to spread down.  Going to fast brought the discomfort back, though after a while, it came back on its own.

	"Ow... It's not going in anymore."

	Miss Lodner gently pulled his hand away and took hold of it herself.  She pulled it out and pushed it halfway back in one time, then told him it needed more lubricant.  He got an up close shot of her pussy when she lifted a leg right in front of him and pushed it inside herself again.  The mature woman scrubbed it and her fingers around her very slick groin for longer than needed before offering it back to him.  Her fingers were as slick as the sound when he took it.

	"Uh... thank you."

	The re-entry was much smoother with the fresh lube.  There was a heady smell of feminine musk adding to his thrill.  Sen plunged deeper quickly to impress her.

	A slight discomfort lingered from before, but it was easily ignored with the pleasure that came from the novelty.  She had been right about stroking his inside.  He was really enjoying it.  There was less than half the sound remaining outside when he decided to feel it sinking in from start to current position and Sen was surprised to feel a clear bulge when it sank in.  Leaning a bit he could even see it.  He hadn't realized how flexible his dick was when stiff.  The class was learning with him, though some were watching their substitute teacher instead.

	Sen felt the tip slide down into the base of his penis and he stiffened. "That's the end."

	"Actually, it's not.  Bend your penis down so the curved end slides toward your rump, Sen.  It'll slide in further."

	He tried doing so and was amazed at feeling the curve slip into a part of  his groin he never knew existed.  It felt like he could go deeper and he was sorry to suddenly feel the handle pressing against his cocktip.  The donkey just stared at it, surprised, disappointed, and very aroused.

	Miss Lodner gripped his erection with the sound still inside. "Do you feel that stiffness in there? That sound is acting a lot like a spine for your penis.  It would stand up instead of drooping even if you were flaccid.  That would make your cock's phylum chordata, too.  Just like an armadillo... or a donkey." She leaned forward and kissed Sen's glans, then nibbled the length with her soft lips, making sure to half pinch the sound through his flesh each time.  The woman pulled back after sucking on his testicles for a few seconds each. "I suppose your punishment is over.  You may slip it out now."

	Sen stared at her open mouthed as she stood up.  Take it out? He wanted to keep it in and have her working it some more.  Her hand around his cock had felt great with that novel fullness within.  She couldn't just leave him there.

	"Um, do I have to?"

	The alpaca put a hand on her hip and swung her neck to the side. "HAVE to? No." She leaned over him again to kiss his lips. "But if you want to get to your next class, you'll have to."

	Sen heard the bell, and looked down at his shaft, still hard, dark with need, and covered in her spit and cunt juice. "I don't need to make it to class!"

	He didn't.  He didn't mind the trouble he got in for missing it, either.