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The aggressive inflation of a Man's testicles. This is most commonly caused by the discontinuation of his self-prescribed Adderall. On occasion, the inflammation of the testicles does not cease until they have expanded to the size of tennis balls.
Person #1 "Dude, my dick is so huge right now. I didn't take my Adderall today."

Person #2 "Oh sick, you have Jager Nuts? My cousin had those once. He ended up puncturing them with a rusty tire iron! They ruptured and sprayed his grandmother with Jager juice.
by Lowell Jeitsema July 15, 2010
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