Your Guess Is As Good As Mine about the meaning of this "doctored" pedestrian crossing sign on 33rd Street near Spruce directly across from Franklin Field on the University of Pennsylvania campus. One clue may be the word "intern" scrawled in white on the body of the black pedestrian figure on the sign. The Hospital of the University of Pennsylvania is just around the corner. But what's up with the Dr. Doolittle hybrid creature painted in red on the left? As near as I can describe it, that four-legged critter looks like it has the body of a giraffe and the head of a claw hammer. Could this be the work of orthopedic surgery interns? You know, hammerheads?

If you have any information or theories, please post them below.