I have to agree with
Nuance; although
this would be cool on a shirt, I like the idea of some of the better Perl Poetry better - perhaps
Hack Perl?
As for the cowl idea from neshura, I like. I like a lot. Enough to suggest that instead of t-shirts, or perhaps in addition to t-shirts, we look into hooded sweatshirts or jackets. Sure, it wouldn't be sackcloth, but just think - a black, hooded sweatshirt with "Perl Monks" would be good enough. And, I could get away with wearing it to the office on "tie-days". <G>
- Ozymandias