Buttboobing Share definition Flag A type of anal sex where the breast is inserted into the anus. Way hotter than ordinary anal. Guy1: D00D SHE TTLY BUTTBOOBED ME. IT WUZ HAWT!!!11! Guy2: I JUST CAME! I AM SO BUTTBOOBING WITH MY GF TOMORROW! Buttboobing by HiHi Kappa Titans September 26, 2008 Get the Buttboobing mug.