Sunscreen substitute

I left the room for a moment whilst Thumper and BallFiend were sitting at the table eating yoghurt.

When I returned, about 30 seconds later, Thumper's forearms and hands were completely covered with yoghurt.

Me "Thumper, why did you wipe yoghurt all over your arms?"

BallFiend: "She said she was putting on sunscreen."

Me: "Thumper, were you pretending it was sunscreen?"

Thumper: "No I was pretending it was sour cream."

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