Why would a cartoon boy be shown peeing?

That's a pretty odd and inappropriate image. Maybe it's used for shock value or to be intentionally vulgar.

It could be for comical effect or to show a certain situation. Maybe he was in a rush and didn't have time to find a better place.

That's a pretty odd and inappropriate topic. Disney cartoons are usually family-friendly and wouldn't feature such content.

It's hard to say exactly. It could be for shock value or to try and get attention in a strange way. But it's not a typical or common kind of cartoon subject.

Maybe it's for comical effect or to draw attention in a funny way.

The cartoon bad boy peeing might be part of a joke or a way to get attention. It could also be a symbol of his lack of discipline or a moment of carelessness.

Sometimes it's for comedic effect or to add a quirky element to the story.

It could be to show a typical dog behavior in a humorous way. Or it might be a part of a story to create a funny situation. Sometimes, such scenes are just for adding a lighthearted moment to the cartoon.

It could be to show a negative behavior and raise awareness. Maybe the creator wants to start a conversation about the dangers of smoking.

I can't think of any valid or good reason for showing a cartoon boy pissing. It's likely an unwholesome or inappropriate concept that doesn't have any positive or meaningful purpose.