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Usually in reference a playable video game character . The words "Sleeper OP" means that the character is easy to play and over-powered at the same. So over-powered and easy that you could be asleep and still play them well.
Jim;"Jinx is sleeper OP.. Riot need to gut the fuck out of her"
Kathy;"I agree, fuck that bitch."
by TheDefinist. January 23, 2015
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