It means sot of "and next thing you know..."
...so he has a few drinks and coo-coo kachoo he wakes up with a 400lb midget...
by Sphen The Hen February 3, 2004
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an old retro term expressing passing time, "yada yada". Revived in "Finding Nemo", and is now directly linked with it, sadly.
I need to go to the drycleaners, and give them my suit, go get groceries, drop off kid...koo koo kachoo, pick up suit and kid, go to dinner.
by MY2K March 16, 2004
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A mispronunciation of a line from I am the Walrus.
"Coo coo Kachoo"

"It's 'GOO GOO G'JOOB,' you idiot!"
by nobodyinparticular March 28, 2007
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a phrase that will later in life be added to our nation's name
the u.s. coo-coo kachoo
by Poppin' Fresh November 19, 2003
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it means it's cool, alright, or okay.
it's coo-coo kachoo
by Emily, and Gabby March 22, 2008
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