The act of an outside source contacting the tip of one's penis, rather than one's testicles, providing a different kind of 'stinging' pain.
I went to go catwhack Jeff but i missed and instead jimmy capped his ass.

I got jimmy capped by a flying puck while playing street hockey.
by Linkage September 10, 2006
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another word for condom,which is to prevent having babies
Wear a jimmy cap to have boring sex.
by blackknight76 February 20, 2005
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