His breath caught just hearing the words and he wondered, briefly, if that was actually what the man thought about. He had Captain America underwear for pete's sake. Steve nodded, sounded like a good idea to him and spread his legs further so Tony could stretch him open.

He moaned again, panting as he was opened up and it was an unfamiliar sensation but not an unwelcome one, particularly when Tony pressed just right. Pleasure spiked through him and he actually whimpered in need.

"Tony, do it," he panted, big hands sliding over every inch of the man he could reach and he tried to pull him closer, pull him in.

On the other hand, he was sure he would fit but it would require patience which was something neither of them really had at the moment.