One of my favs from years ago!
I am bombarded with so many things that annoy me on a daily basis, that I have come to realize I am just an asshole. I would have no choice to release an entire series of PSA's to include:
"Put your F'n phone down and pay attention to what is going on around you!"
"Stay the F out of the left lane unless you are passing someone"
"As a pedestrian, you only have the right of way in a crosswalk" (aka "Step out in front of me playing with your phone again MF'r!")
"Have some clue of what you want to communicate before you start a conversation with someone" (aka "Shut the F up and go away")
There are a ton more, but should be enough to get started.