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when in your dreams a friend or an acquaintance does something that makes you mad or angry, and the next morning you wake up and when you see/talk to them you are very standoffish and still upset with that person. usually occurs with very realistic vivid dreams.
"why are you being so weird towards me?"
"because i'm still mad at you from my dream"
"you cant hold a slumber grudge! i didn't even do anything."
by holymoleydood August 16, 2009
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