Top Definition
simply when a man takes his penis and hits somebody in the face with it
"jon gave me a shaftwack when i was asleep and woke me up"
by trevor hackl November 05, 2005
Dongslap right in the kisser!
Look hes passed out, quickly shaftwack James Prtr (not real name) (yes it is)
by Sunders April 11, 2006
Dongslap right in the kisser!
Look hes passed out, quickly shaftwack James Prtr (not real name)
by N.Saunders April 11, 2006
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