"No, you've got a prop. That's not mime. This is mime." [mimics swinging along, exaggerating all hand movements to demonstrate either 'I'm grabbing a bar' or 'I think you're a moron'--maybe both.]
"Purist. Who knew you'd be a purist about mime?"
"Dude, how long have you been with me? Three years? Long enough to know I'm a purist about everything."
"I know, but--dear god, woman, mime! Surely you draw the line somewhere, and I would have thought it was this side of mime!"
It's funny, he doesn't usually get so worked up about things.