to cheat on a man with another woman, said of a woman; same-sex infidelity by a woman
Studies find that men are, on average, more tolerant of being femcucked than being a traditional cuckold.
Studies also find women to be much less tolerant of their partner's same-sex infidelity than men are.
switching back and forth between orally servicing male and female
At one point during the threesome, she did a bi switch-up, kneeling between them, going back and forth between sucking cock and eating pussy.
a threesome act; like a BJ switch-up but a man servicing two women instead of one woman servicing two men
He became a pussy sandwich, as he performed a pussy switch-up on two women who thought they were the ones taking advantage.