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When you feel so happy that you can sense a tingling in your genitals - much like you feel when you are sexually aroused. The happiness may or may not come from non-sexual activities or thoughts.
Matt: I've bought us tickets for Las Vegas!
Lenny: Ohgodfuckyes.
Matt: What was that?
Lenny: I just got very happorny.
Matt: Ah, I understand.
by snohvit October 15, 2009
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