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ISTFI anagram for "It sure the fuck is."
Ignorant schmuck: "Who is that with Jocko in his big masculine truck...what are they doing?
Totally acceptant person: "You ignorant homoidiot- that's Rocko and Jocko making out (in Jocko's big truck.)"
Ignorant schmuck: "ISTFI! Hell, I didn't know they were gay."
Totally cool person: "See, not all gay people are obviously gay...whatever that means."
by Neddy_Ludd March 04, 2006
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