falaysh Share definition Flag Short for felatio, or oral sex. Invented by Chad Dukes on the Big O and Dukes show. talking to someone named BJ "your name makes me think of the falaysh." or "I bet you are good at the falaysh, BJ." falaysh by lord_karnack December 29, 2007 0 0 Get merch Get the falaysh mug. Buy Now — $32.95 See more merch