Guess what part of your brain is not primarily for storing information about a two gyrating hippos on a camping trip.
The right parahippocampal gyrus. Much to your (and my) surprise, that part of the brain is used to detect sarcasm. Because apparently there is not enough info about gyrating hippos to fill up the left one, and then the right one would have nothing to do, so it got sarcasm detection instead.
[HT: Hot Air]