if you don't know, xkcd is a webcomic that is updated 3 times a week, and is just plain hilarious.
http://xkcd.com/
here are some of the best ones (in my opinion):
oh, and by the way, if you couldn't tell, the primary audience is made of nerds. and that's just awesome.
i highly suggest going to the actual site and clicking Random multiple times. chances are that you'll find something that makes you laugh.