The act of hitting the silent/
reject/ignore
button when some one is calling you on your cell
phone that you don't want to talk to. You are essentially telling them "F you" hence it is called hitting the F you button.
This action may also be known as call dodging or a polite hangup
My dad was calling to gripe at me so I hit the F you
button.
When my
phone rang and I saw on the caller ID it was that ugly
girl from down the street I had to hit F you button.