Reminds me of the time, back in 1993 (in a world far, far away, in a different programming language), of having to figure out a program in which the author used the variable names a, b, c, d, e,... s, t - literally! Took me a LONG time to figure out what he was doing. I did know who the programmer was, and he had left the company, and all I really cared about was trying to reproduce the results for a client. (The programmer was well-respected, and I wasn't going to dis him.)

(I did rename all those variables and added comments by the time I was done.)