Some old fool hit my Yaris in the back!!!!

[Yaris TTE JWRC]

Yesterday, i got off work at 1400, and went on 405 north from Irvine CA to HBC, it was a lil traffic, and i was all the way on the left lane, so the traffic stops and goes, but then at this one stop, first i heard honking, but i couldnt tell where it was, so i check all the car around me, and everything was fine, the car right behind me was an ugly PT cruser with an old fool in there, as soon as i took my eye away form my rearview mirror i heard a honking again, then i heard engine rev, and then i got hit from the back!!!!!!! it wasnt too hard, but it did knock my head backward, then i was like wtf!!!!!! i got out my car in the middle of 405 with all the traffic started to move in all lanes, my next lane to the right was the car pool lane , and make it very dangerious to get out my car, so i got out any way to see if there was any damage, but i couldnt see any, so i raised both my arms and like wtf??? to the old punk!!!, then he did the same thing, i was mad, some stupid old punk hit my Yaris, anyway so i drove home and checked my bumper again, i guess it was really a light hit, i didnt find any damage, but my plate number did have a very lil damage, damn i was so piss when i drive home, i will never go on the freeway again when its traffic time and pouch of stupid asses that dont know how to drive, so becareful.