An expression, used like 'shit!', 'wow!', or 'dammit!'. Often used when no other word seems to fit, but something must be said.
"I'm pregnant."
"Uhh... Shaminagoo"
by Cerrabus April 28, 2003
a word used by our favorite local dorks but soon to be global.
NOTE: if when told she is pregnant shaminagoo is not entirely an appropriate word to be used.
by truemaia April 29, 2003

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