yup photoshop... that is from the comic strip PhD or Piled Higher and Deeper... it was started by a couple of Stanford grad students in the late 90s and is a staple at Stanford and at a lot of universities around the world now. The second photo is from Stanford, and that corner was known as "death corner" as it was a very major intersection on campus (no cars here, just people walking, biking or skate boarding) and has no control to it at all.... I have seen many accidents and near misses.

for any of you who are in grad school, or have been to grad school and haven't read the Piled Higher and Deeper comics, I would highly recommend them... really funny and so true :-) http://www.phdcomics.com/