dirtbag

/ˈdəːtbaɡ/noun
RareNot in standard dictionaries
1

A dirty, grimy, sleazy, or disreputable person.

2

A poor climber, alpinist, skier or other outdoorsman who lives cheaply, without normal employment, and with few amenities in order to spend as much time on their sport as possible.

#derogatory#slang