A term of derision for a certain type of rock guitarist (usually a bassist) characterised by their use of a short strap.

They wear their instrument above the waist. You can probably see their belt because they almost certainly have their (black) t-shirt tucked into their (black) jeans.

Their favoured sound is crunchy and bright. Their playing style is technical, proficient and leaves little room for expression.

They may be playing a bass with more than 4 strings, or worse still a Chapman Stick (see wikipedia).

They may also have a pony tail. In fact, they probably do.