gremble 

v. - the act of being a gremlin. See also, to gremble.

Look at that gremlin over there. I think he's grembling!

gremble by Jeff March 24, 2004

Greeble 

An entity that cats can see but humans can't. Cats are driven insane by them and must destroy them. Whenever you see a cat attack nothing with an insane fury, it's probably a greeble

Look at Mittens chase that greeble!

Greeble by ISeenAGreeble August 23, 2022

Grumblebrag 

To complain in a superficial manner, when one is really just boasting.

I have to wear my wedding ring or else I just get hit on too much. I'm not actually annoyed, I'm just grumblebragging.

Grumblebrag by das Luftkissenboot November 13, 2014

grundle grumble 

grundle grumble ( grundle grumbler, grundle grumbling )

1: When a young lady is pleasuring her partner by kissing or licking his grundle the scrotum will cover the womans mouth preventing intelligible speech.

2: Flatulence that is prevented from escaping up the butt crack that flows over the grundle impacting the scrotum making a distinctive rumbling sound. Grundle grumbles are particularly evident when seated on leather or vinyl seating surfaces or those cheesy fiberglass chairs in laundromats.

3. Mysterious sounds that emanate from the grundle.

1. Whats that honey? I can't hear what you saying you grundle grumbling bitch you.

2. Jesus Dave I heard that grundle grumble from here. Stop farting on my leather seats..no more fucking burritos for you.

3. What the fuck was that? Oh..a fucking grundle grumble. Sorry. Do you have any fabric softener?

grundle grumble by Global Feetus April 2, 2007

Grumble Flick 

(British) A grumble flick is a form of video based entertainment that allows men to pleasure themselves without excessive use of their imagination.

Jack stayed home and watched a grumble flick

Grumble Flick by WordWright June 21, 2009

greeble 

Random bumps, extrusions, and hills and valleys, usually planar. Used in 3D modeling and animation to add interesting detail, like that on the surface of the DeathStar.

"Yo dog, that greeble modifier really pimped out your 3D model."

greeble by Matthew Highison December 28, 2005

grumble volcano

When one person has diarrhea on another person's face who then vomits upward like a volcano spewing lava.

I just had Mexican; can't wait to go home and grumble volcano my girlfriend.

grumble volcano by ghostkilla696969 August 21, 2013