The two bunnies' bodies writhed on the bed, white fur against white. Both very much alike each other. Lisa, the fourteen year old bunny girl rocked against her mother. The strap-on she was wearing pushing into the older hare. Madeline moaned with each thrust.

Lisa felt her mother's body tensing up. She heard her gasp, inhaling sharply. For a moment Lisa hesitated,  but then she doubled her effort, rocking harder, pushing the older hare towards her orgasm.

Madeline's body shivered with the tension. The collar around her neck beeped low, signifying it turning off. She screamed with pleasure as the tension released, her body convulsed as the orgasm washed through her.

She gasped for breath as Lisa slowed her pumping, letting her recover and enjoy the afterglow of her explosive climax.

Lisa lay down on top of her. Her sensitive ears hearing the older woman's heart beating like mad in her chest. They lay there for a good while, hugging. Until her breath steadied, until her heart stopped racing like there was no tomorrow.

Madeline breathed in deep and sighed. She reached for her throat and pressed a button, releasing the collar around her neck.

Lisa watched carefully, eyeing the collar in her mother's hand. “My turn now.”

Her mother looked Lisa straight in the eye. “Are you sure?” She held the gaze. “It's ok to not do this.”

Lisa swallowed. It was her heart's turn to race. She nodded nervously. “No, I want to do this. Just like you, mom.”

Madeline nodded. She extended her hand offering the collar to her daughter.

Lisa grasped it. And lifted it onto her own throat. She closed it, with a click, around her neck. Then she reached down and unclasped the strap-on she was wearing. It fell down onto the bed.

Madeline took the strap on and started fitting it on her.

Lisa watched her mother's preparations. Moment by moment her nervousness increased, as did her heart rate. As did the wetness between her legs.

Madeline finished fitting herself and the two girls sat on the bed.

“Remember, 5 minutes.” Madeline looked sternly at her daughter. “If you come, you die.”

Lisa's heart skipped a beat. She knew all that, of course, but hearing it made it all that more real. All that more immediate.

She nodded and lay down on the bed on her back.

Her mother loomed over her as she straddled her. She manoeuvred ready to insert into her.

“Ready?” Madeline asked, but reached for the collar around her daughter's neck without waiting for the answer. She pressed a button and the collar beeped to signal the start of the timer.

Lisa gasped as the strap-on easily slipped inside her, lubricated by both of their juices. It felt so good, so hot... so dangerous.

Her mother rocked her hips, sending waves of pleasure shooting through her. She closed her eyes as she enjoyed the sensations of the strap-on sliding in and out, in and out. 

She started quietly moaning. Her nethers glistened with beads of her juices. She felt electrified with sensitivity, each thrust sending tiny sparks all along her spine and she shivered with the pleasure.

She didn't know how long it had been, but it must have been minutes. She felt the tingle in her loins grow and spread. She started squirming.

Lisa gasped as another wave flushed through her spine, from bottom to top. The five minutes must be almost up. She had never felt this good, it will feel so good when she can come. Oh so good, oh how she can't wait for it...

Oh, she can't wait... She gasped again as she felt the pressure in her groin grow. [i]Ah![/i] She can't come yet, has to wait for a little bit longer.

Her muscles tensed. Oh, it must be so close now! Oh, she was so close now! But she must wait or she will die... That thought echoed in her head. That danger only made the need in her loins stronger.

She felt herself pass over the edge.

Her orgasm was now inevitable. She strained every fibre in her body as she fought back against her mounting, growing orgasm. It's just a few more seconds, it's been so long it has to be just a few more seconds! “Mom! I'm gonna... I'm gonna...” She felt like an overflowing dam, water spilling over the edge... and then it burst. “COME!”

Her body convulsed as her orgasm exploded.

The strap-on detected the contractions of her cunt. The collar beeped rapidly thrice, signalling its activation. With a shlickt the razor wire in the collar sprung.

Lisa's eyes were wide as saucers as her head rolled off her shoulders. Before her blood covered it, the display on the collar showed the remaining time: two minutes, eleven seconds.