The bad-tempered baby
Despite all our knowledge of babies and their well-being, we still haven’t figured out why they make all kinds of hilarious faces. Contrary to popular belief, babies don’t actually mimic facial expressions. All we know is that there are certain behaviors that all humans have, regardless if they are babies or adults.
Sure, they might imitate actions and expressions when they get older and more mature, but not when they are infants. With that said, this little guy isn’t imitating an expression of someone who’s had a rough day. Maybe he’s just generally irritable.