No, X doesn't stand for "bone you", X stands for whatever other reason you give her for why you want to go to your place with her.

I remember reading in Cialdini's Influence that in order to have people comply, it's very important to come up with a reason why you want them to do something. I believe most PUA theory also supports this idea, which is not to ever just say "We're going to my place" or "We're going to my place to fuck", but you should rather say "I want to show you my goldfish/Coltrane collection/puppy" which (according to MM) will help the girl feel that she wasn't a slut and didn't go to your place for sex, but "it just happened" once she was there.

Now, what are some credible reasons to give her to come over to your place? I don't have pets, or collections of anything, so I'm pretty low on bullshit. What do you guys usually use?