Top Definition
Acronym for "If I Catch You I'm Going To Fuck You".

Generally an online phrase used when responding to irritating or stupid people.
idiot: "I PWNZ0RZ J00!!1!!!1!1"
Jack: "IICYIGTFY."
by Stephen Dufton November 10, 2006
5 Words related to IICYIGTFY

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