Halloween is about scary, though. Not about sex. As a holiday, that is, not personal preference, lol.
I think it is about fantasy, also. I would have a problem with one of my boys being a pimp for halloween. I'm not to worried about them becoming zombies and eating human flesh. I am concerned about how they view the exploitation of women. No daughters.
It has nothing to do with being freaked out about sex and ok with violence. That is rather silly. A pimp isn't about sex. A pimp is about power and money.