1
I was so angry, I just told him 'fuck you'.
Sign the flicking motion from your chin aggressively, then point your index finger directly at the person you are referencing to convey your intense frustration.
2
If they don't respect our boundaries, my response is 'fuck you'.
Execute the open 'B' flick from under your chin, followed by a firm point forward, making sure your facial expression matches the firm, angry tone of the boundary.
3
He yelled 'fuck you' before storming out of the room.
Recreate the dialogue by signing the chin-flick and pointing motion with a sharp, quick movement, using an angry facial expression to show his emotional state.