someone who has the most slippery slimy personality ever.

A person, usually male, that treats one like dirt.

A sneaky person, or someone who is intentionally being a dick.

Person of low moral character

(noun) Those fuckers with the slicked back hair that usually end up going to bars and shit like that on Friday, Saturday, Sunday night to see if they can pick up chicks and all they do is walk around with those stupid fucking velvety shirts with their dumbass fat hairy chest exposed to the world, as if they were the sexiest thing on the earth.

A creepy person who goes sniffing around other peoples girl/boyfriends.
Also somebody who sleeps around alot