A mother at high school graduation ceremony was arrested for cheering when her daughter accepted her diploma. Parents at the Myrtle Beach, SC were warned they would be asked to leave for cheering individual students. South Carolina mom Shannon Cooper, who was accused of whooping so loudly during her daughter’s high school graduation Saturday night that cops charged her with disorderly conduct and placed her in a detention center. “Are ya’ll serious? Are ya’ll for real? I mean, that’s what I’m thinking in my mind,” Cooper told WPDE News Channel 15 in Myrtle Beach. “I didn’t say anything. I was…