Conversations with Heidi

Me: After your nap, we're going to the school playground for Henry to shoot rockets with Boy Scouts.

Heidi: That seems like a bad idea.

Heidi: Shit!

Me: That's not a nice word.  We don't say that word in this house.

Heidi: [Calmly opens the door and steps outside]. SHIT!!!  [Comes back in the house]