Her ass

Mitchell opened his mouth to reply, but no words came out. Rachel waited a moment, and then visibly grew impatient.

"Am I to take it you want to stand here and watch him fuck your sex doll inall three holes?" Rachel asked, sharply.

Mitchell shook his head, and then mumbled something.

Rachel raised an eyebrow, and barked "I can't hear you, speak up!"

"I want to stand here and watch him fuck her in the ass!" Mitchell shouted.

"Why?" Rachel asked.

Mitchell didn't know quite how to answer initially, but as Rachel stared at him, he realized what she expected him to say. "Because... Because his cock is a lot bigger than mine and will satisfy her, while I cannot because I'm a sissy boy with a micro-penis!" he said, his voice faltering.

The crowd was now quiet, the shock of this series of events creating an eerily silent sense of expectation.

The obese superman fan looked up and down Tanya's body, unable to contain the look of desire and desperation that he felt. Tanya took a few stumbling steps forward, and at Rachel's signal, the man moved behind her. Tanya then heard the unmistakable sound of a zip being pulled down, and as the crowd broke out into applause, Tanya grunted in shock as the store owner entered the tube that had been shoved up her ass.

He began to thrust his fat sweaty body up against her, and even though most of her skin was covered by the red latex of the outfit, Tanya could feel his body shimmy up and down. The tube meant she didn't feel his cock directly, but the vigor with which he was thrusting meant that the tube moved in and out. She groaned. She'd already been turned on involuntarily by the exhibitionism that Rachel had forced them into, and now even though the man repulsed her, she struggled to hold back the orgasm that was building up.

Then, the man reached around with his hands, and grasped the red bulbs that had been attached to her nipples as part of the outfit. Whether accidentally or on purpose, his pudgy hands squeezed the balls, and she could tell he was delighted when they emitted a loud comical "honking" noise. Even worse though, the act of squeezing them tightened the clamp that attached them to her sensitive nipples. Tanya winced as she felt the pinch of the clamps, and as he honked her again, the crowd clapped along delightedly.

Mitchell stood by helplessly, watching the overweight neck-beard thrust in and out of her ass, honk her breasts, and generally go to town on his living sex doll.

Mitchell closed his eyes and hoped for Tanya's sake that she could resist the urges that he could see build up in her eyes.

Tanya groaned again. The juices that had trickled out of her moist pussy were now even more visible, and a few people in that privileged front row were now aware of her struggles. They wasted no time in alerting their friends of this, and as Tanya rode the edge of the orgasm, the jeering catcalls she received from the crowd finally tipped her over.

As the man inside her suddenly tensed and jerked, Tanya felt her own climax as well. She felt the tube all of a sudden fill with semen, and she felt the hot sticky cum shoot up her ass in a way she'd never felt before. Then, as her quivering body also succumbed, she began to leak her own juices in a torrent out of the tube protruding out of her crotch.

To the roaring approval of the assembled witnesses, the neck-beard consummated Tanya and Mitchell's union on Mitchell's behalf, and he pulled out of Tanya's backside with a wide, elated and stunned look on his face. He gave every impression of man who had just broken free of the stigma of being a virgin, and Mitchell blushed knowing that Tanya would forever be the woman he'd done it with.