Someone who sits on the bench and collects dust. Also known as a fourth liner. Usually really sketchy at performing the usually physical activities.

A resource well drilled for a perticular commodity such as oil, water, gas etc. that does not produce or find such a commodity or meet expectations. Its said to be a duster.

People that aren't worth anything;
People as worthless as dust

A duster is somebody who is worthless; a loser. Somebody who isn't good at anything.

Usually used by athletes to describe someone who is horrible or worthless at a sport. Usually the worst player on their team, and as a result all they do is sit around and collect dust, hence the term "duster".

someone who is horrible at something, most likely a sport

When a man gets so much pussy and/or jerks off a lot that his foreskin starts to fall off.

A duster is a moustache. There are many types of dusters. They can be handsome, tight, well groomed, mean, greasy, tough or pretty much just what you feel about it.