Baton Rouge Backhand Share definition Flag The act of shitting on the back of your hand and slapping someone across the face. Bro 1: My girl has been cheating on me with some hockey player. Bro 2: Don’t sweat it dude, he’s got a Baton Rouge backhand headed his way. Baton Rouge Backhand by Frunkle December 4, 2020 Get the Baton Rouge Backhand mug.