1. A gym or health club well known for it's hook up potential. 2. Slang for the bedroom especially after a strenuous/wild sex session.
1. I'm going to workout at the jizznasium. I hooked up with two gym bunnies there last week! 2. C'mon baby lets go into the jizznasium so I can work out on your hoo hah.
by barondirksterbarondirk August 16, 2016
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