Denise: Hey, before you go study, I need your help. I have a patient who had to pee on a ski lift, so she pulled her pants down and her butt froze to the seat, and when she got off, she lost most of the skin on her ass.
Drew: What's the question?
Denise: Can I laugh at that?
Drew: That depends. Is she within earshot?
Denise: No.
Drew: Well, it's funny. [laughs] No butt skin.
Denise: I lied. She's right behind you.
Drew: What? Ouch.