Lotion play Puns

Tonight my wife and I were explaining why my son had to wear pajama bottoms after putting anti-itch cream on his legs, because it kept it from rubbing off on the sheets. “But doesn’t it rub off on the pajamas?” asked my daughter. My wife patiently explained that the cream could then rub back onto his legs.

“Yes,” I said. “It’s a perpetual lotion machine.”