1 definition by David Hjorth
The trashy, lowerslung cousin of the hipster pant, favoured by female fashion victims, often those born without the ability to realistically determine their size. Although there is no agreed max-min amount of bumcrack to be shown, a visable 'brickies grin' is a key factor in determining whether the pant is a member of the bumster family.
by David Hjorth February 10, 2006