Sexymofo Share definition Flag A slang for sexy Motherfucker and or if your trying to get with a girl and do not want to use profanity. Dayum Rebecca Stephens, your a sexymofo, please remove those clothes. Sexymofo by justpostthisitsagoodword December 28, 2009 0 0 Get merch Get the Sexymofo mug. Buy Now — $32.95 See more merch