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When you spend the entire night sober and wake up with a fat headache and feeling like you have just been hit by a large moving vehicle.
Guy 1: "Dude, I went out with my friends as the DD, and still woke up with a hangover."

Guy 2: " Ahh, it's the classic Mormon Hangover. Go back to bed and take an advil."
by Mormon party-er July 11, 2011
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When you go to a church dance with all your Mormon friends and the next day you wake up with a headache, you legs are sore from all the line dancing and you can't remember the names of all the people you danced with.
Man, I just woke up with the worst mormon hangover!!
by Penetration statio September 19, 2017
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