underbugger 

A person or annoyance that gets under ones skin and bugs them.

That squeaky door is a real underbugger. I think that new girl is an underbugger, she wont shut up.

underbugger by Christopher Evans August 2, 2008

Lunderbugger

1. Homeless trolls, often seen in subways, and outside your local McDonald's.

2. Stinky, dirty-ass people that live near swamps. Fucking mutants.

1. That dirty old man, is one fucking ugly stink-ass lunderbugger!

2. I was watching The Hills Have Eyes last night, those are some fucking nasty lunderbuggers.

Lunderbugger by Scott Gilbert January 8, 2008

Undernigger 

A person or being that is considered less than a nigger

Man 1: Did you see that poor ass bitch sitting under that bridge?!"

Man 2: "Yeah what an undernigger."

Undernigger by Mosrs August 19, 2012

Underdogger 

Someone who consitently roots for the underdog or who is rooting for an upset in a any particular competition. A typical instinct of anyone who grew up rooting for a team that has never won a championship.

Hey Randyl, you want the Cowboys to win this week? No way, I'm an underdogger. Seahawks all the way!

Underdogger by Braddelcat October 29, 2009

underburner 

A giant, slow-growing, epic-ly painful zit. The kind that you can't pop successfully for days even though it resembles a small volcano on your face, because its source is so deep. Often used as part of the phrase "massive underburner."

This term was coined by Alice Thomas in Columbus Ohio, in approximately 1993.

I have a giant underburner on my chin.

I wish I could pop this dang underburner!

Look at this massive underburner!

underburner by DoobyMaryJ November 5, 2010

underaggerate 

To exaggerate negativly a quantity for the purpose of self promotion.

John : My car does 0-60 in only 5 seconds!
Johns friend : Don't underaggerate its more like 12.

underaggerate by Owen Cox September 8, 2008

Underaggeration

The opposite of "over exaggerate".

To claim something is a lot less/smaller than it really is.

Can also be used in the forms "Underaggerating" and "Underaggerate"

Kathryn: How much do you get paid?

Darren: GYFNO

Kathryn: Come on, tell me. You know I'll find out anyway.

Darren: If you must know, $70,000 per year

Kathryn: That's the worst case of underaggeration I've ever heard!

Underaggeration by The Noam Gnome August 27, 2011