I guess it is more implied, and my first thought was actually the costumes. I just wanted to bring something else to the table. Their moral high ground and reputation really sets them apart for me, but to that end, I think costumes symbolize that the most. Maybe that's where we are both coming from. And, leading into, say, her costume being torn off/stripped, it's like the ultimate way for them to lose.
And I do agree about the trashy/easy look. Halloween is notorious for letting girls look like that. Eye candy for sure, but it's all slutty and not fantasy.