Maybe I've just noticed recently because the windows have been open all summer long. Maybe this person just moved in. But for the last two months, at least, I have been tormented by an obsessive compulsive clapper. This person claps maybe ten times in quick succession, in sets of five or six, probably every thirty minutes.
Day or night.
It doesn't matter. In fact, they are clapping right now. You might not think clapping is that annoying. But loud, sustained clapping repeated over and over day after day like nails on a chalkboard can inhabit your brain until you are leaning out your window screaming at the clapper to please stop or at least seek treatment (I admit! It was a long day of lying sick in bed listening to clapping).
The sound is so amazing in fact I just looked out my window towards the direction of the clapper and noticed a woman looking up in astonishment, looking for the mystery clapper. I will get to the bottom of this. I will not rest until I have subtly looked at everyone's hands for the sign of a raw and red permanent clapper.