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1. (n) Term of endearment referring to individuals currently residing or having resided in the city of Cupertino, CA
2. A homonym of Kupo
A: "Hey, want to play DOTA with me all weekend?"
B: "I can't, I'm hanging out with Cupos."
by mvpride September 30, 2009
A kid with a small weiner.
Man, you is a cupo because you get no ladies because your dick is too small.
by Larry2337645346 May 13, 2006