Maybe it's just for some comical or attention-grabbing effect. Cartoons sometimes do odd things for entertainment.
The reason might be to break the stereotype of perfect characters and show a less-than-ideal behavior for entertainment. It could also be to teach kids not to do such things by presenting it in a cartoonish way.
Well, it might be that the cartoon boy is showing a bad habit, or it could be a way to add a quirky element to the scene. Maybe there's no real reason, just a random moment in the cartoon for a laugh.
The cartoon boy might be picking his nose because he's not been taught better manners. Or it could be a comical way for the cartoon to create a funny moment.
Maybe he's just being a bit naughty or doesn't know it's not a good habit.
Perhaps the cartoon man picking his nose is a way to show his lack of manners or to create a funny and memorable moment. Maybe it's part of a story where he's supposed to learn a lesson about proper behavior.
It could be that the cartoon character is trying to be funny or get attention by doing something unusual like picking his nose. Or perhaps it's part of a comical scene designed to make us laugh.
It could be for comedic effect or to draw attention in a humorous way.
Maybe it's for some kind of comical or shock value. Sometimes cartoons use odd or gross behaviors to get attention and make people laugh.
Maybe there's a bad smell around him. That could be why he's holding his nose.
Maybe she's just being a bit naughty or doesn't know it's not a good habit.