A "low five" invented by a Cannabis connoisseur known as "Charlie" whereas the downward "five" is executed with then retracted as quickly possible with a severe excess of the force expected when receiving a "high five".
(It can also be used in a sideways variation)
P.S.
This is the exact opposite of the 'Charlie Tap'
You know how I can tell he'sexcited about tonight? He gave you the 'Charlie Slap'...
verd,noun
n, a type of hit in which you are hit in the face with the knucles of someones hand this hurts more then an averageslap and somettimes more than a punch. v, the action of this
dude1: dude whats wrong with your jaw it looks like you were hit in the face with a lead pipe