belt it Share definition Flag Properly securing an errant boner behind ones belt when standing up in public. "Dude, I was staring at Tinas tits in class today and the bell rang. I had to belt it so no one would see my chubby and laugh at me." belt it by Arthur Fingerbanger January 6, 2014 0 0 Get merch Get the belt it mug. Buy Now — $32.95 See more merch