Typically a
redneck thing, the act of picking up dry dirt/clay from the ground, spittin on it, and then slapping it on
something/someone.
(If water is used though, it ain't gonna stick!)
Person 1: "Hey bro check this out!" (Picks up dirt and spits on it)
Person 2: "Wha-" (Slaps mud onto
face) "WHAT THE HELL WAS THAT!?"
Person 1: "
Spit n' Slap!"