touching one's genitals. can be used in various circumstances, e.g. sacktapper, sackmacker, sackslapper, et cetera. often used to insult one or to denote someone as a good friend.
didn't you, you sackTAPPER?
by Ryan September 22, 2003
when your penis is under your balls
by ryan April 29, 2004
by Ryan April 13, 2004
Rhyming slang for wanker
by ryan March 24, 2004
by ryan December 07, 2003
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by Ryan November 20, 2003