oven twat Share definition Flag A fat woman's vagina. Fat women tend to have slightly hotter vaginas than skinny women, hence; a twat like an oven. I know she's ugly, but I'll still fuck her. You know she's got an oven twat. oven twat by eafoigrtw December 1, 2007 0 0 Get merch Get the oven twat mug. Buy Now — $32.95 See more merch