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Sheldon: I can't give a speech. Wolowitz: No, you're mistaken. You give speeches all the time. What you can't do is shut up. Raj: Before the movie, you did twenty minutes on why guacamole turns brown. It turned brown while you were talking.
Raj: In Avatar, when they have sex on pandora they hook up their ponytails, so we know that their ponytails are like their junk. Wolowitz: Yeah, so? Raj: So when they ride horses and fly on the birds, they also use their ponytails... Wolowitz: What's your point? Raj: My point is if I were a horse or a bird, I'd be very nervous around James Cameron.