The whole 'fingers and hand on his ass' shtick is admittedly kind of a new thing for Bruce. Well, okay, not the hand part but most definitely the finger part, especially when its rubbing around the entrance like that. It's decidedly not unpleasant, doubly so when Tony's still stroking his cock, but it is something that he hasn't experienced before.

It's enough to bring him out from his haze of pleasure, at least, as he looks back at Tony and shakes his head. "No, its just... new, I guess." He shifts a little, getting himself more comfortable before he continues. "Nobody's ever done that before."

He knows that Tony can quickly catch on to the other half of Bruce's response - he's never gone this far with a guy before, and Betty had been the only person he had managed to be this physcially close with. Tony is the first person for him in more ways than one.