When a group of guys form a circle around a girl, masturbate into her hair, let it soak in and then use their sperm donation to fix up her hair in a stylish doo. This usually happens before an important school dance or wedding.
Dumb Girl: It's only an hour before prom and I still don't have my hair done. What am I gonna do!?
Some Random Guy: Don't worry girl. Me and the guys can help you out. We'll give you the best perm ever.
A rare hairstyle acheived by consuming large amounts of MDMA and then lying down, often as a part of a cuddle puddle. The subtle head rolling that accompanies your gurning will cause your hair to bunch up at points of contact with pillow and/or bedding materials. the resulting mess is known as a gurn perm.
Elisha has been in the middle of a cuddle puddle for hours, her gurn perm looks like she just woke up after an epic restless night.