1
A sneaky way to tell someone to go to hell without them knowing. The more 'a's you use, the more you want them to go to hell right now.
I said 'Faaff' when my brother sat on my face during the movie.
I whispered 'Faaff' to my friend when our teacher gave us extra homework.
I yelled 'Faaff' at the bus driver who wouldn't let me on.