Fattydoe Share definition Flag {FAH-TEE-DOUGH} (Noun)For a person to be cute, maybe even hot, but somehow still stay fat. Ryan: How was your date with Maria? Me: She was a fattydoe Ryan: I thought those were a myth!!! Fattydoe by Tdogredman November 11, 2014 0 0 Get merch Get the Fattydoe mug. Buy Now — $32.95 See more merch