Grumpstep 

A musical sub-genre that consists of (normally) electronic remixes of audio clips from a famed Youtube channel, Game Grumps. Such songs include "Goof Troop Boof", "Banana Shoes", "BaBoom", and "Ice Hair".

Dude 1: Aw, man! Did you hear that Grumpstep song by xXJerryTerryXx?

Dude 2: Which one? Banana Shoes?

Dude 1: Yeah! I had that song stuck in my head for a whole week!

Grumpstep by Random_Grumpling November 11, 2012

Grumpstink 

When a person throws themselves into a tantrum of such ferocious proportions that they inadvertently pass wind.

"Dude, Ashton went off the rails so bad last night that she pulled a grumpstink! My flat still hums of it."

Grumpstink by Prof. S May 4, 2010

Grubstep 

The grimeyest and most grubby of all the dubstep...

Skanking so hard you burn through the soles of your shoes..
Here's for you when it comes to grubstep

Grubstep by Akec July 8, 2012

Grampster 

A man or woman aged 65 years or older who considers them-self to be a gangster. They are usually thugged out with ghetto wear, and have tattoos all over their bodies.

Did you see that 70 year old Grampster with the flat billed Twins hat? I bet that old bastard is hard as hell and is packin' serious heat.

Guy 1: You better watch out for that Grampster, he won't hesitate to bust a fat cap in your ass.

Guy 2: Yeah but he'll probably break a hip trying to catch me!

I bet sawdust and mothballs would fly out of his pockets if that old ass Grampster fell over!

Grampster by Chuck Richards December 18, 2008

grumplepuss 

A sexually interested river dolphin; that through which the theory of relativity has been proven to of been in existence throughout the 19th century, in rare areas of the island of St. Lucia. An interest in the grumplepuss was sparked in the 80's after a hit song "Grumpuss 'n da Basement" by Nelly. It was released on his album Country Grammer.

"Arkantose disregarded the grumplepuss's lust and kept on swimming!"

grumplepuss by William Hart February 26, 2008

grumpster 

n. similar to dumpster, but instead where happiness goes to die
n. a person that sucks the life out of the room no matter how hard you try to cheer them up
n. dark pit of despair, a black hole of unhappiness, a vacuum that sucks all hope and joy from the vicinity

MD is a grumpster because he will suck all your happiness away.

grumpster by JitteryJoe July 27, 2008

grupster 

A parent or gardian who continues to express interest in pop culture, music, and/or fashion. Parents who refuse to grow-up just because they now have a child.

My punk rock mom is a grupster

grupster by Stephanie Fowler May 15, 2007