I enjoy clever puns and a good riddle, here's one for you.
"Why is a raven like a writing desk?" Here's a hint, these are NOT the answers.
Because the notes for which they are noted are not noted for being musical notes. (Puzzle maven Sam Loyd, 1914)
Because Poe wrote on both. (Loyd again)
Because there is a B in both and an N in neither. (Get it? Aldous Huxley, 1928)
Because it slopes with a flap. (Cyril Pearson, undated)
Or you could just Google-it, cheater.