My friend said this the other day when we were working in the lab. It cracked me up. He was surprised that I had never heard it before and said that it was the day of year when we were all supposed to give spanks.
I don't know why, but that was the first thing in my head this morning when I woke up. I guess it's good that I have my kids right now. This way I'm justified if they start acting up today : )