kasu

A Japanese violent word which belong to Nouns less than "Shit", sometimes Adjectives. The original meaning of English is like: residue, lees, precipitation. It can take a few types of meaning and also indicate a direction of feelings. Often can be used against worthless/useless objects, inhumane act, and subhumans rather than human being.

kore ha tada no kasu desu. (This is just a crap.)
omae ha kasu ika da. (You are less than garbage.)
kasu ga! (You scum!)
Shine Kasu(Die scum!)