I found this on a website full of nerdy jokes. I cannot remember the name of the site, but I felt I had to post this anyways. I used to be Physics major and am now a Math major. I find this to be hilarious, although I am sure there are not a lot of people that this will mean anything to.
Update: The website this image came from is http://xkcd.com/
Thanks to Jessica for pointing this out in her comment.