A fair warning... from Think Geek
I Love this shirt! Strangely I feel compelled to mention that my birthday is coming up (June 2). : )
Put the world on notice. It's unlikely that you'll actually see anyone overtly change their behavior lest they be blogged, but you'll certainly shake up a paranoid few.
100% cotton, heavyweight black t-shirt with white printing. "I'm blogging this" on the front and "www.oreilly.com" on the back.