"Keep your drama on the stage."
My daughter teaches a Broadway theater dance class at our small dance studio. It's comprised of kids who love dance and theater, and have dreams of being in the spotlight some day. Will they make it, from our small town? Who knows? But it's a beginning.
One of the moms told me that she enjoys being at the studio during that class, just relaxing in the waiting room, visiting with the other moms while her daughter is in class. I replied that although the kids themselves are very outgoing, enthusiastic, and dramatic, the moms are all very chill and laid back. She came up with the above as our theater moms' motto, and we think we'll get t-shirts...with lots of glitter, of course.
As for the kids, they need shirts too. Their motto will be "All our drama happens on stage."