Jumping Jeans
A phenomenon caused by an erect penis, causing one's jeans to "jump" around.
He got jumping jeans while watching the cheerleading performance.
jean jump
The stupid looking jump/hop one does while putting on a pair of tight fitting jeans. Not to be confused with pants dance.
Alice bought a new pair of jeans and had to do some jean jumping to get them on.
Skinny Jean Jump
The jumping and dancing you have to do to put on skin tight skinny jeans. Usually performed by looping your fingers through the belt loops on the sides of your pants, jumping while kicking your legs out to the side, and pulling on your pants.
After the high school gym class, the girls locker room was filled with girls doing the skinny jean jump to change back into their normal school clothes.