I Should Be Thankful, Apparently

I was about to start a shower when Thing 1 knocks on the door and says that she has to go potty. I let her in, and as I'm turning on the water she adds, "Don't worry, I won't laugh at you."

"Why would you laugh at me?"

"I already said I won't."

"Yes, but is there anything funny about me that I should know about?"

"I *said* I won't laugh at you."

Flush. Sound of exiting child.

I am left wondering.