Flo Share definition Flag A person who is overprotective and will growl at you if you touch someone they love. Man: Yoo who is that? Man 2: Oh yo, that's Flo, don't fuck with them, bro. Flo by nemo-nemo May 19, 2021 0 0 Get merch Get the Flo mug. Buy Now — $32.95 See more merch