.... In a rebellious phase.Hansel, I mean. He's...Excuse me, honey...It's about Hansel and Gretel, right? I'm going to take them out into the woods tomorrow-...He's in a rebellious phase.Huh?He's... ... ReGretelbly a bad boy. Hehe...
A pun of (グレてる) = to become a delinquent/rebellious and Gretel (グレーテル). I tried my best to make this pun work! I'm going to disown you.