Top definition
Ridiculous, absurd, dumb.

It was made up in a random IM conversation accidentally, now more and more people are starting to use it, usually in bulletins and comments. Generally followed by sum (some)
Nick - "Hey dude, it says your email has 7,000 spam messages"

John - "Man, thats sum weekaunch"
by Xanemii January 29, 2009
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