501 Jeans, of course.
http://www.hampersjeans.com/levijeans/levi-501-jeans/images/Levis5010193.jpg
The end of the world as we know it!
Edit: Although at least it seems that the source of the problem has been identified…
BMalion has one of these, if memory serves: http://www.popularairsoft.com/files/images/511_tactical_dutykilt.jpg
ETA: http://www.austinbeerguide.com/wp-content/uploads/2011/03/512_logo.gif
True, I am an unbifurcated gentleman.
Ahoy-hoy!: http://www.edreferral.com/states/mi.htm1.gif