This Forum Game is simple; Type a reason why you would be considered nerdy.
(Thanks to Quadcenturo for the inspiration.)

Here's an Example:

Person 1 - You know you're a nerd when you talk about the Atari 2600 all the time.

Person 2 - You know you're a nerd when you dress up as Darth Vader for fun.

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I'll start:

You know you're a nerd when you can tell someone the names of all the channels of the YM2612.

You know you're a nerd when you have your name on your underwear.

You know you're a nerd when you know by heart how many diamonds it takes to make a full set of diamond armor in Minecraft.

You know your a nerd when you have more experience with video games than you do members of the opposite gender.

You know you're a nerd when you know every single element of more that 10+ games.

You know you're a nerd when you go on the internet and use proper spelling and grammar everywhere you go.

You know you're a pokenerd if you can name all 649 pokemon in order

You know you're a nerd when a woman stops riding her bike, throws her clothes off in front of you, says "take anything you want," and you take the bike.

You know you're a nerd when you prefer food over women too. :U

You know you're a nerd when someone says something wrong and you instantly correct them.