Kathy Sierra of Creating Passionate Users writes about T-Shirt First Development: how we just _love_ geek shirts.

AMEN! Excuse me while I gush. I have a Really Bad Thing for geek
T-shirts. I WANT THEM.

I totally love my baby tee with the Linux penguin. (A baby tee! It's
the first time I've found a conference shirt that actually FITS!)

I am also really fond of a sleeveless red shirt that reads “Street
Code”. I don't think it was meant to be a geeky shirt, considering I
picked it up in a department store, but geek is in the eye of the
beholder.

I have actually gone so far as to ask for someone's shirt. See, I was
walking around Faura when I saw an O'Reilly logo walking around. I
started following the guy wearing the faded shirt, scribbling the
words down because it was a very nice quote about code. He turned
around. I was, like, “Excuse me…” and then I looked up and saw the
guy wearing the shirt was one of my best friends in high school. He
gave me the shirt off his back during my birthday party. MWAHAHAHA.

I want more geek shirts. Cafe Press
and ThinkGeek are expensive, but
I've always played around with the idea of making my own shirts. I
want one that says I use Emacs. I think it'd be a good idea to have my goals written on a shirt, too… Hmm.
I wonder how well cloth markers would work…

コンピューターは我々から多くの時間と手間を省いてくれる。 Computers
save us a lot of time and trouble.