Man: Hey baby why don't you turn around and show me that pretty face.
Leela: Sure.
Man: OH MY GOD YOUR A LEELA!!
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It means fuck off you n00b. Originated in the 2000's, it has been around for over a week!
Your Friend: Hey you want to go bang my girlfriend and then I'll come in and act like she just cheated on me?
You: KNOXBERT!!!!!!!!!!!!!!!!!!!!!!!!!!!
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