Mummy says Wipe

Kid: Help me!

Toymaker: What's wrong?

Kid: I have to - but I haven't -

Toymaker: Tell me!

Kid: It's embarrassing! You see, I was in the bathroom. Doing some... business.

And let's just say I need you to turn my brother into toilet paper, okay?

Toymaker: Too much information! I don't know about toilet paper. Maybe some kind of cloth.

Kid: I have to wipe! Mummy will be so mad!

Toymaker: Did you say mummy? Maybe I can help after all.

Solution: Mummy

Kid: Can't stop to say thanks! Bye!