What's on your mug?

slang term for the act of defocating.

Dude! don't go in there... I just took a grumpy man!

By Ragnar

A turd left for someone else to find, either in an unflushed toilet or in a more creative location.

The manager made me stay late and clean up, so I left a grumpy in his desk drawer (or the sink, or the coffee maker, or the printer, etc.).

By OldOllie

act of dumping in toliet and not flushing, resulting in a pleasant surprise for the next user

I left a nice grumpy at my girlfriends house, it was classic.

By blahblah

ugly, nasty, untasteful, somthing that doesnt look right

Dem clothes is lookin GRUMPY!!!!

By Khalil James

Taking a shit, dump. etc;

I need to take a Grumpy

By Micah#1