Not the least bit humorous. Arrest her and fine her for property damage. She’s the criminal.
If no one catcalled her, she’d be upset. No win.
The issue is that road rage can escalate and spiral far out of control and result in injury, death, or a serious legal issue, far quicker and more unpredictably than many people believe is possible. A middle finger can result in injury or death, because the bottom line is, you don’t know who is in that other vehicle or bicycle. And they don’t know you.
I have been involved in a few road incidents, and I believe they are among the stupidest events in my entire life. In my quest to be a better person, I simply try to avoid them.