Here is one
There was a woman who was still having a conversation on her cellphone in the next row up and I told her that the aft door had been closed and that she needed to end her conversation now. Mind you I said it in a polite way. I even alerted the flight attendant who told her to stop and the lady kept talking on.
The lady said Are you a flight attendant? I told her no but the FAA law prohibits the use of all portable electronics and cellphones cannot be used unless the aft door is open or when we are taxing to the gate after the FA says its ok to do so. She gave me this look. I was ready to call her a b---(: