Authenticity
Isn’t it easy to be a torture on your sibling specially when you are an older sibling and loved by your parents being the favourite one. In particular for children, this can be accomplished in a variety of ways, some of which are potentially dangerous and others which are not so. Thanks be to God, this story falls into the category of “harmless.”
The parents could relax knowing that no one was in danger when their child was creating art in the bathtub, despite the fact that the clean-up irritated them the parents would literally have no idea that the kids are in the bathtub and the elder one is literally painting the younger red from head to to parents would literally have a lot of clean up to do not only just the bathroom but their kid as well