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1.
Three hole sex:

This sexual act happens when a man convinces a woman who digs him to do anyfucking to please her man. Consists of oral, vaginal and anal sex.

During sexual encounter, the dude will say shit like, "I want you to suck my dick long and hard, while moaning, "I want to cum in your ass."
An example of three hole sex would be:

"After we closed the bar? We
parked at the lagoon. Started out as a suck and fuck session. I think we must have had three hole sex - cuz every flippin time I fart? My asshole feels like I am shitting razor blades."
by Ryandefiled February 15, 2014