Steve was a modest person, but he'd also fought in a war which meant a lot less privacy and close quarters. It wasn't like Young Tony had caught him doing anything except trying to grab some clean pants! So he'd recover quick enough, especially because it hadn't been the other Tony. Steve pulled on underwear and pants, buttoning them as he appeared from behind the fence with his shirt slung over his shoulder.
He laughed at the pants comment, quickly patting his hands over his pockets. "Spare pants located," Steve assured him with a smile.
"We haven't been properly introduced though," he added as he held out his hand to shake. "I don't have any parts laying around that I'm authorized to give out though I'm afraid." Steve knew better than letting go of anything that might be Tony's after all.