Wizard Baruffio

[katssirius]

No: HPFGUIDX 159044

I was re reading SS and again came across what I think is a joke in 
Chapter 10.  Flitwick is teaching Wingardium Leviosa and tells them to 
be careful how they pronounce it or like the Wizard Baruffio they may 
end up on the floor with a Buffalo on their chest.  He says that a s 
replaced an f.  I do not get it.  Can someone help me.  What did the 
Wizard really want to happen?

katssirius