urbandictionary.com is my new best friend.
1. IHHIWTMFSOTMFP
16 up,
4 down

A short abreviation for "I have had it with these mother-fucking snakes, on this mother fucking plane."
*You're in a zoo, in the snakes area* "Oh my god. It stinks in here, and IHHIWTMFSOTMFP"