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An expression used to emphasise your lack of care at something. Can also be used to show your absolute shock at something. When used you instantly win the confrontation.

This term orginated from the awesome game "Crash Bash" for the playstation.
Tim : You havent washed the dog, hes covered in cow poo!
Tom : Why dont you smash my crash bash?!
Tim : OK sorry, i'll do it.

John : Why does my head hurt?
Bill : Mate! A car fell off the cliff on fire landed on your head, blew up and then i wee'd on it!
John : ...Smash my Crash Bash!
by Westy Testy October 17, 2005
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