The geometry that occurs after one sleeps for 6 hours with hair that has either not been washed or had gel in it before going to sleep. Specifically, the polygons which form due to chronic stresses on the hair from a particular sleeping position.

hair that stands up like goku's or vageta's hair. it usually always stays up even when wet. it usually slouches down or something when the charecter is hurt, depressed, ect.