The Three Wolves shirt gained fame after it started collecting a bunch of clever reviews, and quickly became a bona fide meme. Once that happened, meta-memes sprang up around it. I liked the broken images variant the best. That is, until today, when I saw the Three Ewok shirt pictured here!
This appears to be a real shirt, available at the Star Wars Shop for $22. Be still my geeky heart!
Two other fun variants of the original Three Wolves shirt are available here and here.