jessica's mountain 

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: dude do you have a boner?

josh: no man. that's just my jessica's mountain.

jessica's mountain by jotagion June 15, 2008

jessicas mountain 

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

jessicas mountain by joshhhhhhh a June 19, 2008