A children's game involving picking up objects; knucklebones; jackstones.
A pair of jacks.
Heroin tablets (from "jacks and jills" = pills)
A selection in a slot machine game that ends the picking bonus.
One who poops; or, poops well.
An infant.
One who poops out on an activity; one who dampens the mood by lack of participation or negative attitude.
The anus; often in reference to anal intercourse.
The toilet.