I have an average 6 inch long and cut dick which is a genuine 7 inches in circumfrence midway up the shaft when hard on. It usually makes most guys eyes water when I fuck, but my cock shape kinda works like a fat butt plug. Once it's in the hole, the thick mid shaft and the partner's sphincter closing around the base of my dick keeps it firmly fixed inside the butt when fucking. It works ;-) ;-) ;-)