Okay, I don't even have children, but this is the second week in a row for a parent/child joke.
Daddy's Gonna Eat Your Fingers
I was packing for my business trip and my three year old daughter was having a wonderful time playing on the bed. At one point she said, "Daddy, look at this," and stuck out two of her fingers. Trying to keep her entertained, I reached out and stuck her tiny fingers in my mouth and said, "Daddy's gonna eat your fingers," pretending to eat them. I went back to packing, looked up again and my daughter was standing on the bed staring at her fingers with a devastated look on her face. I said, "What's wrong, honey?" She replied, "What happened to my booger?"