Cross-examination

Pia likes to walk on the floor with only her socks on.  She keeps misplacing her slippers though, and it's driving Mommy crazy.

Time to eat but Pia can't enter the kitchen without slippers:

Mommy: Where's your slippers again?

Pia: I don't know where they are...

Mommy: It's because you don't always wear your slippers, that's why you always lose them.  You must always wear your slippers!

Pia: But Mommy...how can we sleep with our slippers on?

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