From the Latin root of "slumber" and a combination of the slang word "shleep", to be exhausted and drained from a previous event.

To fall asleep while in the process of doing something.

The act of leaning with one's back against a smooth surface, and sliding down while keeping one's feet in the same place such that the knees finish tucked into the chest.

A person who really sucks at his/her job!

Shitty lump

To be tired or asleep

A shit lump that some people leave on the side of the toilet bowl.
See also: Shlump stream