McKay: You know, I'm not sure that you've sufficiently trained me in actual combat. I don't know how much use I'd be in a fight-our-way-out kind of scenario.
Sheppard: Well, I look at it this way: the Genii have tried to kidnap you on numerous occasions to mine that big old brain of yours.
Sheppard: Well, if we get into trouble, I'll just trade your life for mine.
McKay: Oh, funny.