I totally used mine last night... you know, it's that voice that comes after the mommy rage, when they're just about to take you away in a straitjacket....

My kids were pushing my buttons last night and when I finally got one of them in bed, the nightlight didn't work. I responded totally calmly and expressed that we would just have to cope and investigate the problem next morning. I don't know if I've ever used that tone before but there was no backtalk. It works! LOL

Do you have a scary calm voice?