An organized race where speed and competition are replaced by beer and little clothes. This race usually takes place at the end of finals week in a crowded downtown area of a college town.
It is too hot for pants! Let's go on an undie run!
by Violated Centaur March 13, 2005
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An awesome car rally / pub crawl undertaken by students of the University of Canterbury from Christchurch to Dunedin. Cars and people participatng in the rally are dressed up to various themes with prizes going to the best ideas.
Those damn scarfies ruined the Undie 500 with their riots.
by maggieosullivan January 24, 2011
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(un•DEE• bəgs)
noun
pubic lice. crabs, crab lice.
I got a serious infestation of undie bugs at The Scratchin' Post last time the had dollar lap dance night.
by sammerofthegoods March 26, 2010
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to be viewed as weak or pathetic by your friend or group of friends for not doing as they suggest.

In extreme cases the put down can have "with skids" added to the end to emphasise the weakness/patheticness
"lets go to the pub!"
"Nah, not tonight !"
"YOU'RE GIRLS UNDIES"

extreme

"I think I am gonna pass on the pub tonight to spend time with my girl"
"YOU'RE GIRLS UNDIES... WITH SKIDS"
by Dale Kent June 21, 2008
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Very large underwear - Normally worn by complete and utter fat bastards
By gawd look at his big undies
by toe October 21, 2003
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if you don't wipe well, you'll make some undie art!
by o2c5ft0 November 6, 2009
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