The area near your dick/VJ where your zipper bulges up usually when you sit down and makes it look like you have a HUGE erection. this is for both men and women but if your a woman and your not lady gaga nobody will think you actually have an erection so really only men have a problem with this.

the painful outcome while dryhumping: a bit of skin from the dick gets caught in the teeth of your zipper from the inside of the jeans.