I honestly believe that this definition is too broad. I think there are different types of slapstick. The Three Stooges are the epitome of violent, ritualistic slapstick. Whereas, Keaton or Chaplin's form of "slapstick" was more refined and clever. It had some aspects of violence and repeated gags but their works took on a more graceful air about them. At times they seemed almost balletic. I wouldn't go so far as to say their is lowbrow and highbrow slapstick, but this definition tries to fit them all and I really don't think a single definition can do that.