Top definition
To finish something. Sonomous with Giterdone. Can also be used as an acknowledgement of something.
EX1.
Andy
" Hey man, so I'll see ya later"

Scotty
"Alright, Shutterdown"

EX2.
Steve
"This chick is totally diggin me man."

Pete
"Well, Shutterdown!"
by Peter Mackey February 26, 2007
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