Usually a term used by 4 - 10 year olds to describe their underwear. This word is often used by Hipsters because it's incredible ironic and non mainstream. A lot of hipsters are turning to under pants because of their nostalgic feel, it reminds them of their past.
Hipster says: Yo dude check my underpants
Non hipster says: Faggot
1) to be the worst of the worst. the bottom of the barrel.
2) a house sound guy from a horrible place in the middle of the US ( in Japan pronounced unjapans )
3) A club that is run with the worst staff possible ( club underpants)
Male underwear worn under a pair of trousers or pants. Many people, mostly in the south of England, believe that underpants and pants are the same thing, which clearly isn't possible.