Top Definition
Fuck Off, I'm leaving now

Leaves no doubt to the reader that you will not be returning to the conversation anytime soon
Clay: I'm the master of 12 sided dice and he didn't know shit so, that's when I hit him with my Warlock 5, but he thought he was being awesome by responding with Goblin 7 . . .
Shea: FOILN, you bore me little geek man.
by shearay02 September 04, 2007
5 Words related to FOILN

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