The wrinkled part of skin surrounding the anus.
"Dude, i totally had some gnar diarrhea that messed up my tootch something fierce."

or

"Man that dingleberry was cemented to my tootcher."
by vursatyl July 17, 2008
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A polite version of ass, used with children.
Dude! You're in my seat, scooch your tootch!
by hagriddeservedbetter September 1, 2017
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