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When an individual is really pissed off at someone or something.
Wow! The boss sure has a case of the red ass today. He just fired Immanual.

Who gave John the case of the red ass?
by Digger August 21, 2005
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2
classic phrase to be heard from the very very old people in the south, generally.

to mean pissed off. angry.
yo mawma sho got hahsayelf a cayas of da rayed ayss t'day.

your momma sure got herself a case of the red ass today.
by rachelgirlwonder September 23, 2005
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