When we caught up with Karen O at the New Yorker Festival party over the weekend, we asked about her plans for Halloween. “You know how all these tortured indie-rock guys always wanted to date the cheerleader? Well, this time, I’m going to be a cheerleader, because I’m one of those tortured indie girls,†she told us. “And my boyfriend is going to be the quarterback, and he’s British, so he doesn’t even know what that means.â€