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This occurance is the prolapse of a rectum, the process in which the colon falls out the anus, as someone is eating out the butt. The prolasped colon, in turn 'suprises' the person giving the 'anal oral'.
I was licking this girls butt, and then I got a cookie monster suprise. It was so gross.
by Jon the Dude January 20, 2006

Words related to Cookie Monster Suprise

anal anal sex anus butt colon rectal prolapse