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A person who rides your ass until you go insane or won't let go of something stupid. It started in a game called Warcraft 3 and became the worst thing at LAN parties.
My cousin is an a$$ jockey and won't stop nagging me about my grades.
He's been a$$ jockeying me for two hours straight.
If you don't stop a$$ jockeying me, I'll throw you out the window.