REGINA, Saskatchewan – A festive elementary school “Christmas with a Twistmas” concert turned into “fistmas” after two women began brawling during the performance.

“Parents leaving the concert at Arcola Community School Tuesday night say two women started fighting each other during the show,” CJME reports.

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One concert-goer tells the news station one woman “may have had too much eggnog.”

“She punched another parent in the face and then they ended up getting into a fight and one of them is hurt pretty badly,” Attia Judge says.

The incident – which police describe as a “scuffle” – resulted in 29-year-old Naomi Angel Marie Asapace being charged with assault.

“Ruined the kids concert,” one concert-goer posted on Facebook, according to the CBC. “My son was embarrassed. We left just as police swarmed the school. Brought down the joy the kids were feeling.”

After the episode, school principal Luke Friesen issued a letter to the community, saying:

For those of you who attended the evening concert, it is unfortunate for your children and our community to have experienced such a terrible and troubling event from a few adults who decided to bring their outside issues into our school.  It is unacceptable for adults to display behavior in our school that contradicts our values of Kindness, Fairness and Respect and put our community at risk with such foolish and unsafe behavior. We do not tolerate actions such as these from our students and nor will we allow adults fighting in our school as well.  These actions will not overshadow the positive performance of our students and your children.

CJME reports Asapace will appear in court on January 22, 2015.

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In 2012, mothers brawled at a Los Angeles pre-school graduation.

The person who shot the video wrote, “This all started because my son’s teacher was so unorganized. Basically because of budget issues all the kids had to share a cap and gown for pictures. One of the moms in the video was basically taking over and the other one didn’t like it and told her something about it.

“The sad part was that there was an older lady that got pushed and she actually hit her head on a bookshelf and I rushed to help her but when this other mom rushed in to help us the angry women actually attacked the other mom.”