cross between a skank
and a slag
, a sclag is a term used to describe the female gender (usually targeted at a specific group) signifying very low intelligence and intellect, stupidity, filthiness and dirtiness. A sclag also has a very poor hygiene manner, is very rude, inconsiderate and interrupts other people aswell as being either fat, ugly or both.
jeez I'm really sick of Jess, she's rude inconsiderate and she smells really really bad. What a dirty sclag.