What is it: Sad Keanu is a photoshop meme featuring the famed actor Keanu Reeves looking very sad in different zany situations.  It started as a thread on 4chan, and quickly spread in popularity to the rest of the internet.  The original photo is of Keanu sitting on a park bench eating a sandwich, but everyone just felt so sorry for him because he looked so upset, like a kid who gets picked on in school.

- http://www.bite.ca/bitedaily/2010/06/the-sad-keanu-story/

Thanks to @icyliquid for his version of Sad Keanu featuring my avatar!