wheelie bar 

An assembly attached to the rear of a car (or truck) that is designed for drag racing. The purpose is to prevent the front wheels from lifting too far off the ground, thus avoiding unwanted wind resistance and potentially the front wheels lifing so far off the ground that the whole car flips over on its roof.
Typically, a wheelie bar looks like an "A" with 2 wheels attached to the top of the "A" with the base being attached to the rear frame of the vehicle along with a spring.
Basically, if you happen to see a car that NEEDS one of these out on the road, dont drag race it. You WILL lose. Cars that need this usually run 10 seconds or less in the quarter mile.

I just bought a wheelie bar dude! Finally I can floor it without having to worry about my ride flipping over! I can't wait to see my times at the track!

wheelie bar by Domininc June 25, 2008

wheelie bars 

Rods that extend from the back of a car and are connected to wheels that help keep the car from flipping backwards during sudden acceleration.

Extremely modified rear-wheel drive vehicles need wheelie bars to save themselves from doing a back flip.

wheelie bars by johnebp February 14, 2004

wheeliebagger 

noun. (also may be used as an adj.)
-a person who partakes in the art of carrying a wheeled backpack or luggage in a public setting (other than an airport) to transport goods (books, pens, pencils etc).
-Usually used in a derogatory way, as wheeled bags are awkward to walk behind, or maneuver around. They are also rather loud on tiled surfaces, which is also annoying.

"Sorry i'm late for class, i got stuck behind a total wheeliebagger"

wheeliebagger by FAN COL January 21, 2010