Haha! I'm weak willed so I just couldn't resist.
"I didn't think knocking was really...I mean I've never needed to." He murmured, his tone slightly rushed. He couldn't help it if he was a bit embarrassed. Sure technically he was walking in on himself, but in a way he wasn't really. There were differences. Ones he couldn't help but notice.
He forced himself to turn around, only because he really couldn't stop looking, shrugging when he realized the other asked who he was exactly. "That's not really important..I mean it's important, but right now it just...I'm sorry, can is it possible for you to put some pants on, Doctor?"