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When you take a shit and some magic inner asshole pinches it off before your normal ass hole does. You then wipe and wipe; and you can tell your ass is totally clean! Then, 15 minutes later ... bam you have itchy ass because your inner asshole let a bit more shit out.
Jack: "Jim, why are you fidgeting and keep squirming in your seat"

Jim "dewd, my inner asshole got one over on me again, i just can't get my ass clean"

"YES! I finally got one over on my inner asshole and got my ass wiped clean.
by Lascivious January 06, 2011
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