Free Boobin' Share definition Flag 1. The act of a female not wearing a bra under her shirt 2. The female equilivant of Free Ballin' "Its more comfortable to sleep Free Boobin'." Free Boobin' by metallicafan37 February 21, 2010 0 0 Get merch Get the Free Boobin' mug. Buy Now — $32.95 See more merch