Babies in class?

Yesterday, as my most interesting and rowdy class was coming in from the bell, I heard a little wee cry and noticed a baby carrier. I assumed it was was one of those fake babies, so I nonchalantly asked, "Oh is that one of those fake babies for a class?" Well, the girl who was carrying the baby carrier said, "No, I'm just babysitting." She apparently thought it was no big deal. Of course I was confused, because why on earth would someone ask a high school student to babysit during 4th period? Of course, the whole class was mesmerized that there was baby in class saying, "Hey! A Baby!" or "How cute, a baby!" Really the whole thing was pretty funny... and random.
As I started my lesson for the day and talking to the students, the girl who was supposedly babysitting "SHHsh-ed" me saying, "Be quite the baby is sleeping," to which the whole class burst out laughing at the irony of the situation.
One of the funnier things that have happened, and just wanted to share!