Baby, go home. You're drunk.
It makes a lot of sense when you think about it. They can't walk in straight lines, they fall asleep everywhere and they're a little too honest about their feelings -- babies and drunk adults have an awful lot in common.
Check out this Buzzfeed video and, if you're an adult getting drunk for St. Patrick's Day festivities this week, maybe periodically take a minute and think about whether or not you're acting like a baby.