The word "Nilla" originates from the delicious Vanilla flavored cookie brand "Nilla wafers". Nilla started as a slang term for the beloved vanilla flavored shortbread but as widespread love for the vanilla flavor grew so did the use of the word Nilla. "Nilla" is now used very diversely but is most commonly used as word of endearment and camaraderie between friends. It should not be confused with the racially charged word "niller" (which is equally as offensive to Caucasians as the word "nigger" is to blacks), nilla has no racial or sexual connotations and can be used freely among any persons. Except Niggers.
Nilla1: "S'up nilla you will never guess what happened today. My mom let me eat a whole box of Nillas for breakfast!"
Nilla2: "Nilla, no way! I didn't know your mom was so nilla."