1 definition by gabeisaac

When you are boning your smoking hot girlfriend doggie or in any kind of style from behind and she smacks her arse back onto your phallus in sync with your mighty thrusts, which in turn creates a satisfying slapping sound.
Lexi gave me a good smackback last night.
by gabeisaac December 5, 2016
Get the smackback mug.