we do not use this term for girls, we use it for boys. we use this term when boy's are wearing pants that are so tight on the legs and the crotch that they look like girl's pants. or maybe the boy even bought these pants from the girl's section in a store, or borrowed them from their sister or girlfriend. boys wearing girlpants has become a fad in rock bands and in skateboarding.
Jenny woke up and wore a miniskirt, and went to the restaurant and ate 10boiled eggs, after that she met her boyfriend, Jay. But then, she ripped the most horribly smelling girlfart in the world, because of her fart, Jay passed away