The noise used when imitating the sound of a whip cracking. most commonly heard when someone is getting told off, or have just got owned.

It is pronouced by using a hard 'k', and saying the 'tsh' like 'tush' but squashed together.
Teacher: You are not here to point out grammatical mistakes on my board. I haven't spent all my time and effort doing these pages for you, for you to concentrate on the wrong thing. Out of my classroom!

Everyone else present: k'tsh! k'tsh!
by Gregovitch Von Strangle May 14, 2008
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