It’s best to avoid all cracks in the sidewalk and ladders this week, since Friday the 13th is coming up. It is estimated between 17 and 21 million people in the United States alone suffer from Friggatriskaidekaphobia, an irrational fear of Friday the 13th. The first superstitions around Friday the 13th arose in the 19th century, and while the exact origins are unclear, historians believe it has to do with Friday being an unlucky day and 13 being an unlucky number. The “safest” way to observe this non-holiday is most definitely through the use of hilarious memes. We’ve scoured the Internet for the best ones for you to share on your own social networks, earning you some extra good karma and “juju” before Friday the 13th.