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The mere thought of his girlfriend or wife bringing home a hung stud to use him as a live-in fucktoy sends electric shivers down his spine. He dreams of the soft degradations, the whispered degradations, and the degrading praise as he's made to serve their lover's cocks with his eager mouth. Those perfect pink nipples will be pinched and tugged, sending jolts of pained pleasure straight to his own neglected member as he sucks and slurps, worshipping the thick shafts and swallowing spurt after spurt of hot, virile cum.
Being a heteroflexible cuckold is his ultimate erotic fantasy come to life. The forced bisexual humiliation of being made to service cocks that dwarf his own pathetic prick, all while his lady watches approvingly, is the ultimate turn-on. His own frustrating arousal is made even worse by the knowledge that he won't be allowed to touch himself until after he's cleaned the last of their lover's loads from his face and chest. Only then is he granted relief, stroking himself until he sprays his meager offering into a crumpled tissue while imagining the glory of being put in his place and used like the cuckold slut he is, again and again.
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