girl jeans 

1. Jeans worn by slim guys which were originally marketed to girls. Such jeans are slim fit, low rise, have few decorations, and reach closely between the legs. Often: jeans are black, have a 5th pocket, and, for crotch comfort, are flexible (e.g. from 5% Lycra).

2. Jeans sold in the girl's department; junior jeans

What a fashion violation -- that fat kid is wearing girl jeans with flowers on the pockets!

girl jeans by Ryen Salinger April 11, 2007

Girljean 

A girl that's not your girlfriend yet but that you have sex with and love.

Guy: will you be my girlfriend?
Girl: no...that freaks me out...can I he your Girljean instead?
Guy: sure!

Girljean by Markjean May 26, 2016