Dare me; I dare you.

Kyler and Mae were sitting in the kitchen, working diligently on their homework.  I walked in quietly and stood behind them unsuspectingly, only to witness the following conversation:

Mae:  "Hey, Kyler, do you dare me to eat this pencil lead?"

Kyler:  "No."

Mae:  "C'mon, just dare me.  I'll do it."

Kyler:  "NO, Mae."

Mae:  "I'm seriously not gonna leave you alone until you dare me to eat at least one stick of pencil lead.  Just one tiny stick.  And I'll really do it."

Kyler:  "Fine, Mae.  Eat the lead.  I don't care."

Mae (yelling):  "MOoOoOMMM!!  KYLER'S TRYING TO MAKE ME EAT PENCIL LEAD!!!!"

She was quite startled when I said, "Oh, really?" and my voice came from one foot behind her, rather than  a different room.  But she's so quick that she just put on that oh-so-sweet smile of hers and said, "Juuuust kidding.  I knew you were there."  Then, she told me I should quit bugging her while she's trying to get her homework done.