CIUYCH 

Cram it up your Cram Hole.
Used as a less vulgar and less effective way of saying STFU.

Steve:You're a dumbface
Jared:CIUYCH
Steve:I didn't ask where babies come from, I mean really STFU dude!

CIUYCH by Jeans June 1, 2005

M9 CIutch

A Kid that Trys to become youtube famous but then fail so he trys to become a Gamebattle Pro but then FAILS then acts tuff but really hes just a Mexican Rat Kid

Dude JoEpro 3G your such a M9 CIutch
or
Hey M9 CIutch still trying

M9 CIutch by Kritical3Gx December 16, 2010