...you've been asked to find the keys and you go like, "now where's the search box for this house...?"

you wonder why you can't alt-tab a boring meeting/lecture

You say 'lol' instead of laughing.

You've been working on your assembly lab for too long when you stop in front of a door, read the sign that says "push", and because you're still thinking about maintaining your stack you try to "pull" the door open.

When you start speaking punctuation and emotive actions out loud.

[indent=1]It's been a long day *grins*

You try and hit Ctrl-Z when hand drawing....

You do a build. There's a stupid syntax error, and you involuntarily verbally apologize to the compiler. (I've done this)

[color=#000000][font=tahoma]You find yourself sneaking away to the computer in the middle of the night when your spouse is asleep. [/font]

You say 'lol' instead of laughing.

I want to punch people who do that, seriously.

[quote name='way2lazy2care' timestamp='1329150521' post='4912640']
You say 'lol' instead of laughing.

I want to punch people who do that, seriously.
[/quote]

Likewise, in my opinion you might as well have "I am a massive nerd and unable to function socially" tatooed on your forehead.