I've touted the shirts from local shop Raygun before in one of my many "much love for Des Moines" posts, and now they've finally come out with one just for cyclists.
Dang, now I think I gotta have one. So polite. So Midwestern. "Please don't run me over." Reprinted in mirror-image on the front in case the person happens to be running you over in reverse.
If they'd just print that sucker in reflective ink, it would be PERFECT.