1 definition by Jay and Mitch

Top Definition
Term used to describe the hardened state of your penis. Only used when an erection lasts longer than 19 hours. C.B.S stands for, as you know, Chronic Boner Syndrome
Me: "Yo mon, J.P. gotz dat C.B.S"
Jay: "Hellz yeah, he's had that boner for two damn dayz!"
by Jay and Mitch October 07, 2006

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