system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is it young children can have food all over their face and it doesn't seem to bother them in the slightest?
gpt
Why should it?

One of the main reason older children and adults dislike having food on our faces is embarrassment.  We have learned we shouldn't have food on our faces, because society says so.  So when we get food on our faces, we feel embarrassed because we aren't fitting in with the rules we've learned.

Children haven't learned these 'rules' yet, so don't feel bound by them.

It's basically the same reason children feel perfectly comfortable saying "Look at that [unusual feature] man there," whilst pointing, but their parents cringe.