A term used to show how you don't care. Usually stands for, Well that fucking sucks, Too bad, That ain't happening, That sucks, and Fuck you, bitch it's not happening.
Origin is from Cory in the House but now used for a everyday Piss off.

Pronounced ("Shack-a-diish" )
Friend: Did you have sex with my girlfriend?

Me: Shackadesh

or
Friend: Give me my 50$ you owe me.

Me: Shackadesh

or
Girlfriend: You ignored me so you could hang out with your friends?

Me: Shackadesh Bitch.
by W1GG135 December 7, 2011
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