You've had sex with three generations of the same family. The daughter, The mom and the grandmother, or, the son, the father and the grandfather.
John had sex with his girlfriendthe other night, after already having sex with her mother and her grandmother before, therefore completing the Redneck Trifecta.
Due to contrary belief, trisexuals are not attracted to any living or nonliving thing. Instead, they are only sexually attracted to the tricerotops dinosaur. Most trisexual prefer horns inside of them instead of dicks.