1. (also ass-keister) to hide something in the rectum; also as vtr., to hide something in someone else's anus.
|Prison Sl. 76: Keyster Literally, keyster refers to a person’s buttocks. […] To smuggle drugs in one’s anus would be to keyster them.|
|Monster (1994) 324: I keistered it [i.e. a knife] and brought it from L.A. Country jail.|
|You Got Nothing Coming 19: There will be a cavity check [...] for the benefit of any ignorant motherfucker that thinks he can ass-keister a hypo or crack pipe or even a naked photo of his sister Kate doing the shimmy.|
|Mad mag. July 41: What about the meds? Safely keistered, my friend.|
|Snitch Jacket 100: ‘Happy Easter the nail and plank’ meant keister the shank.|
|Pain Killers 166: See that [...] she keistered him! Everybody think’s he’s a bitch, meanwhile the Flip probably made a grand.|
|Happy Mutant Baby Pills 16: Because of my own decade and a half imbibing kiestered Mexican tar, I got some kind of heinous [...] parastite .|
2. to sodomize.
|Destination: Morgue! (2004) 352: He keesters cats while his comrades catch it on camera.‘Jungletown Jihad’ in|
3. to betray, to harm [fig. use of sense 2].
|(con. 1964–8) Cold Six Thousand 413: So he celebrates en route to Leavenworth. We keester Howard Hughes, and jimmy packs his pj’s for the pen.|