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1.
When someone jerks off a lot
Brady: Hey James is pretty cool right?
Stan: Yeah but I wouldn't shake his hand or anything.
Brady: Why?
Stan: He's been a little Jerk Happy lately.

masturbate jerk off jerk happy horny
by Hand Shaker February 27, 2011
 
2.
Chronic masterbation from having nothing better to do with your time like working, exercising, or anything of value to society.
I got nothing accomplished today because I locked myself in my room and became jerk happy.
by Dr. Long Schlong STM August 14, 2009