(n) Irregular underwear, found loose in a bin. Usually discovered at a dirt mall, flea market, or other discount venue.
Note 1: Irregularities are generated through factory mistakes in mass-production.
Note 2: In most cases, people find that in spite of the substantial discount, the low cost of bundies is not worth the trade. Due to a lack of packaging, you do not know where bundies have been. In addition, most irregularities make bundies so uncomfortable they are functionally useless.
While rummaging through a big crate of bundies, I found a pair of tighty whities with one leg hole too big, and one leg hole too small, but that was nothing compared to the boxer shorts with a collar.