Stemming from the well-known phrase "shut up", this expression evolved to specifically mock those of oriental ethnicity and is a reference to a scene in the cult film Donnie Darko.
Bully: Go back to China, Bitch!
Girl: Chut up!
by Micky Zee April 27, 2008
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The way people unintentionally say 'shut up' after having seen Donnie Darko 15+ times, without the intention of mocking people of Asian descent.
"It's snowing where you are? Wow, it's 80 degrees here in Phoenix."
"Chut UP!"
by Bluejuliet December 21, 2016
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