Caterpillar:  "Momma, what's on my back?" *turns around and points to her naked back*

Me:  "Nothing, honey."

"No.  There's something on my back.  Look!"

"Nope, baby.  There's nothing on your back."

"Look closer."

*I lean way over and put my nose up next to her back*  "I don't see a single thing on your back.  What am I looking for?"

"Blood?"

"Nope, no blood."

"Scratch?"

"Nope."

"Boo-boo?"

"Nope."

"Elephant bite?"