Being an only child is notoriously kind of boring, but you have no idea just how much you're missing out on! Twins have their own language, have playdates as early as in the womb, and even have a built-in, biological get-out-of-jail-free card.

Here are a few things you didn't know about your friends who get to hang out with their own clones:

Now You Know: 18 Facts About Twins That'll Make You Double-Take

Now You Know: 18 Facts About Twins That'll Make You Double-Take

Now You Know: 18 Facts About Twins That'll Make You Double-Take

Now You Know: 18 Facts About Twins That'll Make You Double-Take

Now You Know: 18 Facts About Twins That'll Make You Double-Take

Now You Know: 18 Facts About Twins That'll Make You Double-Take
Source: Twins Days

Now You Know: 18 Facts About Twins That'll Make You Double-Take

Now You Know: 18 Facts About Twins That'll Make You Double-Take

Now You Know: 18 Facts About Twins That'll Make You Double-Take

Now You Know: 18 Facts About Twins That'll Make You Double-Take

Now You Know: 18 Facts About Twins That'll Make You Double-Take

Now You Know: 18 Facts About Twins That'll Make You Double-Take

Now You Know: 18 Facts About Twins That'll Make You Double-Take

Now You Know: 18 Facts About Twins That'll Make You Double-Take

Now You Know: 18 Facts About Twins That'll Make You Double-Take

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