Someone who is outright rude and has a terrible personality . A scumling is usually accompanied by other scumlings who are just as terrible as they are.
Wow, those group of girls are complete scumlings
Derogatory: A member of the opposition; an enemy who cannot be trusted.
Them: Come to the dark side, we have cookies.
Allies: Silence, Sith scumling! You're trying to poison us, aren't you?