grump out 

A softer way for women to say "get bitchy" but still get this point across; works particularly well as a warning to a significant other.

Ugh," she said. "OK, but if we're still there at midnight, don't be surprised when I grump out.

grump out by Wendy von Bendy August 27, 2010

gramp out 

The act of a young male falling asleep or getting tired at a very early time, or any such action that would be considered "grampish", or that of an old person's routine. Used as ridicule between male friends.

Are you gonna gramp out already? It's only 8PM.

gramp out by Gowk19 May 14, 2011

Gump Out 

When you gotta dip out but you don’t have a ride.

Hey guys, had fun but, I’m bout to Gump out!

Gump Out by Birdbrains April 2, 2021

sweating out a grumpy 

The act of taking a dump on a hot day, pushing and making the face of Grumpy, one of the seven dwarfs.

"Damn dude, what happened to you?"...."I was sweating out a grumpy in that port-o-potty, it was frigging hot in there".

sweating out a grumpy by flipbang September 27, 2010