A newly created acronym replacing the common term "YOLO", it stands for "Fuck It, Shit Happens". Most commonly used as an excuse/motivator when one is about to perform a reckless action.
"Hey man, I don't think snorting that crushed up mint is a good idea"
"Yeah probably not, but FISH"
"You're right!"
"Yeah probably not, but FISH"
"You're right!"
by Mr. Potato 2.0 November 7, 2012
Get the FISHmug.