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The sexual act of two gay men who 69 by putting balls in their mouths instead of dicks. When seen from the side this position resembles two chipmunks 69ing with cheeks full of nuts. These nuts will keep them happy over a long winter.

Mentioned in South Park s15e01 as Kyle's email address
I don't know but he mentioned something about 69ing Chipmunks.
by goldengirlsblows April 29, 2011