A sexual act, during which one member rubs ice cream on and around the butthole of their sexual partner. They then proceed to lick it off and rim their asshole. Through this action the cold front of the ice cream and warm front associated with the probing tongue of the active partner coincide in a destructive tornado of pleasure and lust.
WHEN USED IN CONVERSATION:
Billy: "Did you hear Chris got an ANAL TORNADO last night from that sketchy old dude?"
Raul: "Oo baby, I've got a feeling we're not in Kansas anymore."
Michael: "Rolling in the deep"
WHEN USED FORMALLY:
The five day forecast predicts a one hundred percent chance of ANAL TORNADO on Friday night.