Scum

Template:Wiktionary Scum can refer to:

A layer of impurities that accumulates at the surface of a liquid (especially water or molten metal).
A greenish water vegetation (such as algae), usually found floating on the surface of ponds.
A card game, also known by various other names, such as President.
A derogatory insult, implying "worthless", "of no value", or "despised".
Soap scum, a chalky residue often found in showers or bathtubs.
Scum, a 1977 play for TV directed by Alan Clarke and set in a borstal. later remade in 1979 into a film by the same director.
Scum, a 1987 album by grindcore band Napalm Death.
The SCUM manifesto, a 1968 radical feminist book by Valerie Solanas.
SCUMM (Script Creation Utility for Maniac Mansion), scripting language developed at LucasArts to ease development of the graphical adventure game Maniac Mansion.
SCUM (band) - Norwegian/American punk/metal band
The topmost liquid layer of a septic tank. Some would consider this layer "frothy"
A derogatory term used by students of Cambridge University to refer to students of Oxford University, although it is less common than the equivalent term at Oxford, "Tab".
Originally coined from the Southampton Company of Union Men. Nowdays it used as a derogatory term to describe the fans and supporters of Portsmouth FC.

A derogatory term used by Norwich City Football Club supporters of Ipswich Town Football Club supporters, ie "scummers".