nails on a black board
It is Justin Bieber's voice and music.
most annoying
Annoying.
warning sound
It's really annoying.
loud, constant, annoying
more annoying, most annoying
throw it off a skyscraper, won't be annoying after that.
extremely annoying
Annoying.
The duration of Most Annoying People is 3.5 hours.
one of the most annoying thing existing