Looking for a story …
Guy is hanging out with a couple, the other guy falls asleep, guy and girl joke about messing with him, she mentions putting a dick in his mouth, and narrator lets it slip he wishes he were the one sleeping.
She realizes what this means, and coaxes him into living out his fantasy of giving a blowjob. She starts to blow her sleeping boyfriend, then coaches the narrator as he takes over.
Just can’t seem to find it …