A way to explain a quiet person more in detail, not suppose to be a slur or a insult but it may be one is used in context.
This person is silentistic for some reason.
A cyick is a term meaning overly attached idiot, basically the extrovert that has the IQ of a rock. (Pronunciation: Sy-i-k)
"Can you stop being the cyick in the group" Ron said to Kyle.
A insult or slur too describe a horrible or bad teacher.
Teacher: YOU GET AN F!
Student: You are a heleach, son of a bitch!
person 1: you cool, slaz-a-laz
person 2: we should get married