brunderwear 

panties that are so high they can double as a bra.

it was worse than grannie panties...it was BRUNDERWEAR

brunderwear by Cleveland, OH glam squad July 20, 2009

Trunderwear 

Extra underwear you keep in your trunk...just in case.

Crashcakes is heading to Sam's Club to replenish her trunderwear for the weekend!

Trunderwear by F.U.B.A.R.bie #32flv September 29, 2011

blunderwear 

Clothing that is offensive or outlandish.

Dude, all you ever wear is blunderwear

blunderwear by Angelus Animi November 5, 2007

runderwear 

The skin-tight underwear that comes pre-sewn on a pair of super duper short running shorts.

timing girls: "Holy shit, you're not wearing any underwear!"
super fly runner guy: "I, as a matter of fact, am not. I am wearing runderwear. Look!"

runderwear by teeeheeee October 31, 2008

blunderwear 

Underwear that has been horrifically soiled with menstural blood.

Jesus Ninah, did you put on your blunderwear today?

blunderwear by Jackso December 8, 2006

runderwear 

The undergarment worn on the waist to thigh and pelvic region when running, either for exercise, sports, pursuit or evasion. This undergarment absorbs perspiration and holds the genitals intact. It should not be worn continually after running, and should be washed soon afterwards.

"When I finished jogging at the track today, my runderwear were soaking wet and quite pungent!"

runderwear by Joefeather May 15, 2013

bumderwear 

Underwear bought at a thrift store, generally purchased by bums. Comes with vintage washed skid marks.

Bumderwear is sold at these fine retailers, Goodwill or Salvation Army Store.

bumderwear by jnagle85 October 8, 2009