Country Dictionary

the act of precipitating saliva out of one's mouth, usually by a dog

Sanford the bulldog grumps a lot on the sidewalk.

To be innocently treated like poop because someone is in a bad mood. (Verb) Similar to being "dumped" on with a grumpy flair.

Stop grumping on me, it's not my fault Natasha ate your waffle!

Being grumped on, is just not fair.

To have been put in a bad or grumpy mood by an outside force. When for whatever reason things in your environment have pissed you off.

"For fuck's sake you are in a bad mood, who grumped you?"

The state of one's digestive system after a night of drinking lots of beer. It is a prolonged period of beer shits, and is characterized by repeated heavy shits, that take forever to come out, and leave greasy streaks on the bottom of the toilet.

I got hammered last night, and I've had the grumps all morning.
Man, somebody must have the grumps; I can smell it from here, and the toilet is shit-stained.
I had the grumps this morning, and I feel about 5 pounds lighter now.

To take a dump while walking.

I was walking back from school the other day, and I totally grumped. It was epic!

To be actively grumpy, in such a way that the person in question is actively making an effort to be grumpy and, moreover, express that grumpiness.

Dude: Harrumph. Grr. I'm so grumpy.
Guy: Dude, why are you grumping like that?

Johnson's slow, angry and sad behavior when he's grumpy.

"Why does he seems depressed today?"
"He's just grumpy. He does it really well, too. I woke up today, planning to be grumpy, but it just didn't work out."
"Okay, he's grumping his way over; we can leave now."