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This word is an acronym that stands for Ass In Front. This is the male version of the FUPA or gunt. This phenomenon occurs when a male wears a pair of pants that is too tight and the bulge from his genital region protrudes farther than his waistline
Bill tried to fit into his jeans from high school. This was no easy task since he had gained more than 50 lbs since then and when he came down the stairs his AIF was prominent for all to see
by CreampieGuy July 16, 2011
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Nov 27 Word of the Day
A stupid person; it refers to the lack of surface area on an individual's brain. The general thought is that the more surface area (wrinkles, creases, etc.) a brain has, the smarter the person is. Conversely, a person with a smooth brain (no wrinkles) has less surface area and would therefore be stupid.
That fucking smooth brain put his shirt on backwards again...

That smooth brain is dumber than a pile of shit.
by Tip Tank May 14, 2011
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A.I.F. stands for "ass in face." Hold someone down and rub your ass in their face. Other variations include Bare-ass In Face (B.A.I.F.) and Birthday Ass In Face (B.D.A.I.F.)
TJ was being very annoying so Scott, Andrew, and Matt held him down and I gave him A.I.F. It was great.
by Turk McDuffy April 29, 2007
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When STFU just isn't enough, AIF is an internet term used to say "Axe in Face."
Me: This guy wouldn't stop harassing me even though I was telling him to leave me alone or STFU.
Cristan: What'd you do?
Me: I said to him, AIF! and logged the hell off! He knew it was a-comin'
by anc April 26, 2007
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Arranged Improvised Fight, a fight that had been arranged beforehand but made to look like it was not arranged or planned.
The guys wanted to get an AIF on that dude.
by Ghost of Nate Abel Cox August 12, 2019
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