Tally wack Share definition Flag When you slap someone across the face (usually female) with your penis. Bill: "Hey Dorithy mind if I tally wack you" Dorithy: "Sure Bill go ahead" Bill: "SMACK BITCH" ^_^ Tally wack by John Auison June 11, 2006 0 0 Get merch Get the Tally wack mug. Buy Now — $32.95 See more merch