Stuff My Ass Full of Cum 11. My girlfriends and I have this weird sex hang-up – we all cum best when some very horny and very hung stud shoves his throbbing cock deep up our tender assholes. It feels great to ride that rod, but we cum best when his balls finally explode and he pumps load after load of hot jizz all the way inside! Let’s face it, we all love our asses…STUFFED FULL OF CUM!.