almost exclusive to audiophiles, the skull crease is identified as an indent in ones hair, caused by a person's headphones pressing down his/her hair, making a 'crease'. this often happens when you play lots of music, or you just put your headphones on to block out what your teacher is telling you. this can also occur when a woman uses a headband or elastic to keep their hair from flying everywhere
my bro: wow that was an intense game of MW3!!
me: wow i bet.... nice skull crease.
my bro: wtf is that?
me: its the spot n ur head that ur hair is pushed down from wearing ur headphones.
my bro:is that good?
me: its a way of telling you that u need to get out more
A phrase used by certain regions of Colorado to describe having sex. Surprisingly, the phrase is also popular in Williamsburg, Brooklyn, particularly in McCarren Park and surrounding areas.
Used in the UK as a slang word for funny, its unsure where the word started being used in this way but its one piece of slang that has swept its way across and is now used by most people in GB its due to the fact that something makes you laugh so much that your leaning over and cause your sides to "crease" tho its now used very over-commonly.
School Teacher: Billy get out the class, dont do that EVER again