1 definition by joshhhhhhh a

Top Definition
The part of your pants or shorts around the crotch and zipper where excess zipper and fabric material fold outward forming a bulge, resembling a mountain, or even a boner; though both males and females are often victims of jessica's mountain. Jessica's mountain can usually be seen when one is sitting down.
austin d: dude josh, do you have a boner?
josh a: naw man thats just my jessicas mountain
by joshhhhhhh a June 19, 2008

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