Top definition
the most inner part of your ass...only visable during the atomic moon (opening up your ass cheeks when you are mooning someone). Also it's where your ass smells the worse...like rotten eggs drenched in spoiled milk.
Rich: I saw Drew's inner inner ass last night while I was talking to my girl on the phone.....then he farted.
by Drewman05 July 07, 2009
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