N. A crass yet novel insult asserting that a person is, in essence, the personified act of male masturbation. Best used in moderation and in lieu of traditional slander due to its absurdity and memorable sting.
1 .Hey Jimmy Whack, what are we wearing tonight?

2. Did you see that guy cut in line? What a Jimmy Whack!
by Europe Penyen January 25, 2010
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Whacking your thin jimmy aka your cock back and forth on the face of your partner in a rapid and repeated fashion.
She was being a little mouthy last night so I gave her the jimmy whack.

Since she was sucking my balls so good I did a little jimmy whack on her forehead.
by Eaton Holgoode December 15, 2017
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another word for jimmy tap but much more vicious
"Hey, do you know what a jimmy sack whack is?" "No, what is it?" "I'll show you." "Oww, why'd you do that, now I'm not going to be able to have kids."
by Beegis June 23, 2006
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