What I never thought someone would say to me.....

As you know by now I meet a lot of strange people and especially when using public transport.
So, going to work using London´s underground I suddenly found a drunk older man sitting in front of me. He smelled alcohol. He started to talk to me and it was all very innocent and he joked and we just talked. Then he reached out and touched my hair without my permission. I got upset and stood up and left. He screamed after me: - It´s not pubic hair!
How embarrassing as the other passengers watched and must have wondered what he meant by that and who I was and how I knew him...oh, really why me!?