Oh it was definitely a good growl. For a moment, Tony thought she was going to rub her clit, and he'd been watching in earnest at that thought. Then he felt her slicked finger running between his cheeks and over his entrance, and he clenched, not because he thought it felt weird, but because it felt good. "Fuck...Pepper...." and he slammed into her so hard he made a tremor run up the wall. That was reinforced for God's sake. Whimpering as he buried his face against her neck, every sound he made was only to encourage her more. He felt so dirty for wanting her to do that to him. "You're going to make me come..."