I'm reminded of a T-shirt company that was around when I was in college, named "Outer products". They had various math and physics related shirts, for example with Maxwell's equations (your choice of differential or integral form). Also one with the first 4 lines of the Odyssey.
For computer geeks they had quite a bunch, including this particularly cryptic
one for COBOL programmers
(.)(.)
IKF4084I
paul
