The cross-pollination scene. This includes Garet (and the rest of the team) not getting the joke until it's too late.
While the gang are in the Lakaman Desert:
Mia: Oh man, it is really really hot Issac: Well it's no wonder Mrs. Eskimo coat. Garet: Yea, take it off. You'll get heat stroke Mia: I can't Issac: Why not? Mia: It's because of my body. It's apparently the hottest in the game! If anybody takes one look at it then there would be no telling what would happen! That's why I wear a ridiculous amount of clothing all the time and never take it off! Issac: Oh come on, you're overexagerating. Mia: My body turned Alex straight when I wore my swimsuit. The Hotness overload! Overload! Garet: Woah Issac: Hey you think you can turn Ivan straight? Ivan: I AM NOT GAY!