Being in a generally grumpy mood and/ or getting worked up and frustrated over something. See also moated
What's wrong with Chris? I don't know, he's all butt sore over something.

Dude, don't get butt sore!
by The Cobra January 18, 2005
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After anal intercourse, most people are okay and can get on with life but for some, this act is accompanied by a feeling of tenderness around the anal opening. This is known as sore butt.
He had just Come Out and ventured onto the Gay Scene. The lesbians looked at him and smiled knowingly because they knew he had just walked into the Lion's Den. The gay men smiled appreciatively because this was New Meat. A man named Rupert walked across and grabbed the young gay man by the buns and after several drinks, took him home to Newbury, where they had very hot anal sex. The next day, he got up and dressed but felt a hot stabbing sensation in his rear end. He had sore butt. He was now a fully-fledged homosexual and was proud of his new lifestyle. Yay for gay!
by Heinkel Winkle August 1, 2004
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When some one is upset about a certain situation or its outcome
Bill sure was Butt sore about how much his colonoscopy was going to cost.
by bigfreaky April 1, 2017
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