He laughs, the sound low and pleased as he keeps moving his hand over the length of him. He wants to tease, wants to draw this out, but Steve's been so patient that making him hold back almost seems cruel. He'll have time to really work on Steve later, Tony's going to make sure of that.

"If you wanted that," he says, sounding far too amused, "you shouldn't have fried my brain." He nips at Steve's lower lip, then turns slightly to scrape his teeth along the line of his jaw. The grip on Steve's cock firms as Tony's mouth trails down his throat, leaving little stinging nips at random.