hot fatty Share definition Flag The hottest and most moist shit you can possibly take in ones lifetime, usually originating from digestion of a previous Taco Bell meal Friend: Man I just took a hot fatty on your mom. Me: Taco Bell? Friend: Yeah... hot fatty by Tag -A-Fag March 14, 2018 0 0 Get merch Get the hot fatty mug. Buy Now — $32.95 See more merch