I was cleaning up Offspring #2's room the other day and noticed that one of her curtains had a massive rip in it.
Me (sternly): What happened to your curtain, #2?
Her: I don't know.
Me: #2! It didn't get ripped all on its own. What happened to it?
Her: I. Don't. Know. But it didn't get cutted with scissors.
Hmmm... does that answer my question or not?