A few more sniffs had Rob gasping for cock which the stranger generously provided. He positioned himself in-between Rob's widely spread thighs and rubbed his cock heads along his ass slit before sliding the head of his thick cock slowly into Rob's hole, giving Rob a few seconds to adjust to its size then pushed it all the way in. A short shot of pain shot through Rod as the big head popped in but soon Rob was in heaven as the big cock started fucking his hungry hole with deep long strokes as he sniffed more poppers.
By now Rob's eyes had become partially adjusted to the dark and he was aware of more bodies gathering around him. He felt hands stroking his restrained legs and thighs, chest and tweaking his nipples. Another new hand was stroking Rob's cock and other cocks were pressing against his face so Rob turned his head and started sucking on one while stroking another with his free hand.
The poppers were really having an effect and Rob sucked, wanked and moaned like a real whore as more bodies gathered round. The cock in his ass was quickening, pounding harder and faster and he knew the stranger would soon be emptying his balls. Somewhere in the recesses of Rob's mind was the thought "he's not got a condom on, he's gonna spunk in you and you don't even know who he is"!!! At that thought Rob's own balls gave up the ghost and released a jet of cum into the air and over the hand of a random guy who was wanking Rob off. This was followed almost immediately by the cock in him slamming all the way in and exploding deep inside, filling Rob's guts with hot creamy spunk.
Rob's head was spinning as he gulped in air past the cock still buried in his mouth and was barely aware of the cock slipping out of his ass followed by pools of spunk. Suddenly the cock Rob had been sucking was gone only to reappear between Rob's still bound legs and pressing against his well lubed hole. Another cock filled Rob's mouth, this one longer that the last one which was now thrusting in and out of Rob's squelching hole. Rob's own cock had softened but he felt a mouth and tongue starting to suck in back to life. The guy now fucking Rob wasn't as thick as the first guy but he was vigorously pounding Rob's hole grunting rhythmically as he did. The cock in Rob's mouth started jerking as he shot a salty load into Rob's mouth which he greedily swallowed. This was followed a few seconds later by the second load of anonyms cum being shot up Rob's hole. Another hard cock pushed past Rob's lips into his mouth as the last few squirts of cum were being pumped into Rob's guts, which he sucked on greedily.
Two more cocks entered Rob's hole, one with condom and the other bare but didn't breed him. Another salty load filled Rob's mouth while his own re-hardened cock was milked by an accommodating mouth who swallowed Rob's second load of the afternoon.
After that Rob was released from that sling and left wondering who's spunk was happily swimming around his belly and guts and loving that he'd never know who they were, what races or colours they were or what any of them looked like.