look up any word, like wyd:
 
1.
I feel ya bro
Guy 1: "I fuckin' hate this shit!"
Guy 2: "IFYB"
by werewolfdiva April 22, 2013
 
2.
I fucked your boyfriend. :)
Girl 1: "Oh, hey when you were on vacation IFYB."
Girl 2: "Are you kidding me?"
by ifhb. June 18, 2010