Tony laughed in response, drawing back just enough to align his nose along Bruce's, still holding him with one arm around his neck and the other hand dropping from his shoulder to his sternum to firmly press with the heel. "Come on, what's your happy place? Are you forgetting to breathe?" he encouraged. Holy hell, was that satisfyingly effective, though, as much as Tony was positive Bruce had this. Sure, he had a jumpstart, and it might have been the public venue, but Tony would just have to control the variables a bit if he really wanted to know what that crawl up to Bruce's edge was like. That was just good scientific theory.