golf clap

On the golf course spectators are asked to be as quiet as possible.  No sudden loud noises, no loud voices or energetic movements.  This is all set out in the Aberdeen Code of 1783.  It is understood that when a golfer does something truly excellent — a hole in one, perhaps — the spectators may wish to applaud. They can do so but in very muted tones. The golf clap has emerged as the conventional way of expressing admiration, a low clapping sound that does not disturb other golfers on the course.

Away from the golf course the golf clap is an expression of derision.  Have an audience clap the fingers of one hand rapidly against the palm of the other and you have the sound of complete disdain.  Normally we would have used a slow clap for this where the volume tends to go up.  I guess this is something different.