(noun); a fictitious and raunchy character that appears during Easter and is known for perverse behavior and grabbing ass.
by Wenatchee Guy March 25, 2008

SISSYWHORE PRISONBITCHSHERRYOUSBLACKOWNED
The Keister bunny ended up spending the three day holiday in a special"filming cell" outfitted with cameras. the cell is used to video training films for cell extractions, finding contraband,etc. for the holiday, it is being used to add to the popular PUSSYASS TRAINED TO BE A PRISON BITCH SOLD TO THE CRIPS VOLUME 3: FACE FUCKING NO HOLDS BARRED.
by Sherryousissywhore April 25, 2020

On Easter Sunday the priest makes sure to check every alter boy for hidden eggs in their rectal cavitity.
On Easter Sunday, Father O'Brien did a "keister egg hunt" and searched every ass in the church for hidden eggs!
by StiffPeter1015 May 19, 2018

by Big esko April 29, 2020

The hyphothetical bug that is up one's butt when something unimportant suddenly needs to be done, NOW.
"He wants all the promos in the correct locations." But it'll take hours and everything just moves two feet to the left, sounds like someone has a Keister Beetle.
by bambilee April 30, 2011

During anal intercourse, the participant who gives rather than receives. Not a great name for your fantasy football team.
by Walter Babcock August 8, 2021

The hypothetical hare that is up one's butt when something unimportant suddenly needs to be done, NOW.
"He wants all the promos in the correct locations." But it'll take hours and everything just moves two feet to the left. It sounds like someone has a Keister Bunny.
by Benevolent Deity February 25, 2018
