The code would make a note of the social groups using that slang based on everything from location to common traits like age. While it could automatically add terms on its own, Facebook raises the possibility of polling users to decide whether or not their turns of phrase should get official recognition.

This is just a patent, and there's no telling whether or not Facebook will ever use it. However, it could come in handy for both you and the social network. If Facebook can understand what you're saying (even when your parents can't), it can give you more relevant news articles or determine your mood. Yes, it could also be used to deliver more targeted ads, but it could be worthwhile if it determines whether someone is a trendsetter or just another Gretchen-from-Mean-Girls wannabe.