In reply to The Lemming:
Sensibly Lemming (if you really wanted one...though I can't think why) your 'local' silk-screen printer will usually whack one out for a fiver - if you supply the 'clean' shirt.
My younger brother (55) has a whole variety from the traditional 'World Domination by 1980 - crossed out - 81 - crossed out - 82 etc etc' to 'Franky Goes to Plockton.'
Here in Australia one of my daughters has a similar collection - mainly 'Rock Stars' printed at her college.