The trend reportedly got its start sometime in 2003, but was spread like a virus ever since. Is it the low barrier to entry? The funny/surprise element? Or an underlying love of both tattoos and moustaches?
Editorial note: Whoa! You've found a super-old post here on BuzzFeed, from an earlier era of the site. It doesn't really represent where we are anymore, and may in fact be totally broken, but we're leaving it up as a part of our early history.