broad-backed Share definition Flag Screwing a 400lb woman or man in the butt with out a condom. Man, I got so drunk last night, you should see the chick I broad-backed. God, I hope that was a chick. broad-backed by Deaf music man February 5, 2010 0 0 Get merch Get the broad-backed mug. Buy Now — $32.95 See more merch