the taste of party you get in your mouth after drinking, smoking cigarettes/weed, and eating random and/or gross things as a result of the two aforementioned factors.
(for morning-after-party mouth, see afterparty mouth)
I was totally going to hook up with Rob last night but he had mad party mouth.
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the sour, dry, or bitter taste you have in your mouth the morning after a night of partying, drinking, and/or smoking weed/cigarettes. usually accompanied by a sore throat, party hair, and/or a lack of knowing where you are.
man i woke up in Rob's tool shed this morning, but the worse part was i had some crazy afterparty mouth.
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