Traditionally, a mix consisting of root beer and orange pop. More and more, used to refer to any non-alcoholic combination of soft drinks, juices and other (intended-to-be-drunk) fluids. Typically non-lethal.

Warning: do not mix j0lt cola and Coke together - what you end up with will taste like soap.

Can also refer to liquid found in a marsh; also to any mixture of liquids resulting in a murky, muddy appearance.