From SBS Volume 49, Chapter 476, Page 128

D: In Chapter 462, "Oars' Adventure", Brook and Ryuma had a duel. That form was very much like fencing! I could certainly tell, because I took fencing when I was in high school. And, reading further, the words coup droit, bond avant, remise... these are all fencing terms! I love fencing, so this was really great to see! So Brook is a fencer, then! That slender form is simply perfect for the style! (I die if I can't wear a mask!!) P.N. G-chan

O: That's right, he's a fencer!! (So that's what you call it...) He's a fencer, folks!! You heard it here, people... Brook is a fencer!! And thus, the SBS has fensed!! I mean, ended! See you next volume!!