While writing a (non-kinja) blog post today, I discovered the lovely French Valentine's Day tradition of "la loterie d'amour":
Unmarried people gathered in houses facing each other and called the name of their chosen partner through the windows. It all seemed very romantic, but the charm was spoilt when the man decided his choice didn't come up to scratch and proceeded to desert his Valentine. Naturally, the women retaliated and the custom developed of building a huge bonfire where they burnt the image of the now hated male while yelling abuse. It became a rather embarrassing heated event, so was wisely banned by the French Government.
But maybe don't try this at home, folks. I'm pretty sure that was an episode of Friends, and it didn't go well.