To have sex from the back, hit it from behind, doggystyle. Doing this hard and fast so that it makes a smacking noise.
by jennw January 13, 2007
by k money bitch June 13, 2017
by Miyah19 April 23, 2017
by Lady Cougar November 19, 2003
Smack On means to propose a fight with someone. Generally in a joking manner but can definitely can be used very effectively in a real situation. Smack On is closely associated with the term "punch on".
Joking:
Luke: "You suck apples"
Brad: "Smack on cunt"
Serious:
Josh: "I fucked your ex on a trampoline!"
Ryan: "Smack on cunt!"
Luke: "You suck apples"
Brad: "Smack on cunt"
Serious:
Josh: "I fucked your ex on a trampoline!"
Ryan: "Smack on cunt!"
by KinnyMcbinspin February 04, 2014
by liv March 21, 2005
by Bigg Phill January 27, 2010