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