the place in your brain where you remember some of the best shits you've ever taken and recall them fondly. similar to the Spank Bank, but hopefully there's no crossover between these two in your brain.
"Brian?"

"Yes?"

"Ever taken an amazing poop that just was magical?"

"Let me dig into the Stank Bank - ahh yes, April 3rd of 1983, I dropped anchor for 30 straight minutes while I read The World According to Garp, and it was lovely."

"This is really inappropriate discussion for church, guys."
by Peven glugh April 30, 2021
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The anus/rectum. Otherwise known as "asshole".
"Suzie let me put it in her stank bank last night!"

"Awesome!"
by bluescythe3 April 24, 2009
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Making a withdrawl from the booty and then making a deposit in the vagina.
Her anus was too loose so I stank banked it back to the love box.
by MasterJRC January 18, 2008
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You don't want to know. BUT. If you must... A stank bank is a place you go to store unwanted memories of molestation in your childhood.
"Dude that story sucks. You should go to the stank bank with that one!"

"I'm going to see a therapist now. She helped me move my shit to the stank bank."
by The Scrabble King November 11, 2018
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