Absolutely childish and stupid to retaliate in traffic. I sure wouldn't want to retaliate on another driving who might be carrying a gun and feel their life is being threatend. Bad ending. Just chill and let people in line, or let them go by. Just my 2-cents. And yes, I carry concealed. If someone tries to take me out in traffic it could get ugly for them if the situation warrants me using deadly force to protect my life or the life of my loved ones in my car.
P.