“He made a face suggesting that he liked how disgusted I was”

I pulled up at a stoplight and looked to my right because a man was clearly trying to get my attention. And he was masturbating.. I was very flustered, rolled up my window and flipped him off. He made a face suggesting that he liked how disgusted I was. I reported him, but I’m so taken aback. He was in a tan ford heading south on topanga cyn