I read this the other day, and I can't stop laughing about it.
Q: What does the 'B' in Benoît B. Mandelbrot stand for?
A: Benoît B. Mandelbrot.
It took about 2 seconds to sink in, and now I love it; the joke is as elegant as its namesake.
There are some other good ones here: http://www.theguardian.com/science/2013/d…