Wicky-Whacker Share definition Flag A penis. Specifically, the type that is long and hard enough to slap someone across the face. Brenda got slapped across the face by John's wicky-whacker. Wicky-Whacker by WickWhack October 18, 2023 0 0 Get merch Get the Wicky-Whacker mug. Buy Now — $32.95 See more merch