New at ThinkGeek, the shirt for Twitterers who haven't yet quite pinned down their perfect avatar, the tiny image that captures who and what they are. Or, as ThinkGeek suggests, the perfect avatar for disguising who and what they are.

Sometimes people say stupid stuff. Sometimes people Tweet stupid stuff. The difference with the two is that teh Intarwebs is forever. Sure, you can delete it out of your stream after you've realized it was a Bad Decision, but, as many subjects of federal investigations have discovered, digital never really goes away. That's why we've created the "You Don't Know Me" Anonymous Twitter Shirt. Spend the last 140 characters bitching about your boss? Take an inebriated TwitPic that's suitable for your MySpace page? Never fear! Abandon your old feed and create a completely new identity. Sign up for Twitter anew, fresh as a newborn babe. And please — don't mess it up this time.

Either way, cool shirt.