Kathmann

To spend an outrageous amount of time in the restroom at your place of employment.

Usually involves defecation.

I can't hold this in any longer, will you watch the register for a while, I've got to go take a Kathmann.
or,

Karl always came to work about 20 minutes early, so he could take a Kathmann before clocking on.

by danjatron February 17, 2009