The bunching effect that takes place when the sweat from a good workout meets the boxers in the grundle region. Also can be used as an insult.
Man I need to hit the showers I've got Grundlebundle like nobody's business.
or
Man that clerk always thinks im trying to steal , what a grundlebundle.
or
Man that clerk always thinks im trying to steal , what a grundlebundle.
by Skinflutelessons July 20, 2007