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A floating mask from the Crash Bandicoot game series. He aids Crash & co. in some way. He has an evil twin, Uka Uka.
Aku Aku is yammering on about power-slide boosts again.
by LucarioIzumi January 17, 2011
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To receive oral sex while taking a diaherria on a toilet.
I got an aku aku on the toilet
by Bob February 16, 2005
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