Use the lower portion of your digestive system as a storage bin for contraband
Carl had to keister a half-kilo of coke in order to clear customs from Columbia.
by Cass July 1, 2005
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keis·ter

Pronunciation: 'kEs-t&r, 'kIs-
Variant(s): also kees·ter /'kEs-/
Function: noun
Etymology: satchel (English slang)
slang : BUTTOCKS
The word is out about town,
That Rock Hudson loved it in the brown;
He eschewed the nubile maids,
And now he has a case of AIDS.

Those who finally got him,
Penetrated his well-rounded bottom.

While down in Tijuana Town, when asked:
"Hey meester! Do you want to fuck my seester?"
Rock replied: "Hell no! Sock it to me in the keister!

-- doggrel, circa 1985
by Nelly Scratch December 6, 2006
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To inject drugs up your or someone else's rectum. Also known as a booty bump. See crystal meth.
Adam came down with a nasty sore in his ass from keistering too much meth all weekend.
by sonomachris September 18, 2006
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To inject alcohol into your anus to bypass the liver to get drunk.
I used a turkey baster to keister a couple shots last night. Man I got fucked up.
by vevalachris June 29, 2011
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A perfect arse

An arse that defies gravity

Not too big, not too small, not flat, perfectly round
by Big Poppa Mills December 8, 2020
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An anus filled with mushed feces.
Am asshole that was never wiped and is filled with excrement with the consistency of thick soup.

Diarrhea Butt.
I Can’t just use tissue or a wet wipe, I need to shower to clean this soupy keister.
by Fatman Slim March 3, 2022
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A popular hiding place for contraband such as drugs, especially in prison. The anus. Usually the contraband is wrapped in a condom.
Johnny kept is smack in a keister stash.
by veritone October 4, 2008
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