Overall design

• Logo in the front on the chest
• Black on white or white on black?
• Catchy phrase on the back.

Phrases

The initial list has been taken and trimmed from http://us.pycon.org/TX2007/Slogans

1. if code not in python: raise hell
2. "Simple is better than Complex"
3. In really small letters: "readability counts" or "rdblty counts"
4. I'm not really a Wizard. I just use Python.
5. "Python: fits your pocket, your hardware, your brain!"
6. "Braces? We don't need no stinkin' braces!"
7. "Python: programming for human beings."
8. Or we could go with the original spirit of Python, and have a code snippet wherein all classes, methods, and variables are named "Bruce" (in various states of capitalization) to avoid confusion.
9. "It's explicit."
10. self.respect()