Shag Tat 

Excessive knotting of a clump of hair at the back of ones head caused by frenzied rubbing back and forth of said clump during sex, the physical act of love, coitus...

Limecat: Dudette, you got a mean motherfucking shag tat, what's went owwwn...
Clockspider: Manbitch and me, we had sex aaaall night honey. No time to brush my hair, all shagged out. get me?

Shag Tat by Hels Bells November 17, 2005

Shag Tat 

result of a good night between the sheets

Boss: Your hair is a mess. Sort it out employee
Employee: Shut up and get yourself a good shag tat, bitch.

Shag Tat by Jessie Jane December 28, 2005