It sounds like youve already got a plan, but youve got to be careful.
I was driving the girlfriends car, a mint fiat hgt through a 30 limit past 5 or 6 teenage boys, had the window down and they started swearing and making cocky little signs to my gf. Ive had it before by myself but unless something is actively done to endanger the car or myself I carry on.
These little t**sers thought theyd got away with it and carried on whilst I proceeded to accelerate down to a junction and turn around. All the while with my gf saying the sensible thing to leave it. I screamed back, slammed the brakes on and went to get out, all of a sudden they werent so clever and the "no, not me mate, nah I didnt say anything". Scared the living sh*t out of them if youre aggressive enough, doesnt matter about your size or whether youd do anything, its the thought that theyve got nothing to protect them.
Having said all this, I doubt it taught them a lesson and nowadays kids have little or no respect and may well have pulled a knife or something like that. Was daft in hindsight.