D (5-year old): "Can I tell you a joke? Mammy thinks it's a bit funny."
Daddy: "Sure."
D: "Where do people keep their cars?"
Daddy (playing along): "I don't know. Where do people keep their cars?"
D: "On their car insurance!"
Mammy (leaving the room, laughing at the look on Daddy's face): "She heard it on the radio earlier and has remembered it wrong."
D (pointedly to Daddy): "I don't even know what car insurance is!!!"