Here's how I imagine it played out...
Alexxx: [sticks his head in his sister's room] Hey, sis.
Alexxx's sister: [tweaking her MySpace profile] I'm busy. What do you want?
Alexxx: Let me measure your calves.
Alexxx's sister: Ewww! What's wrong with you?
Alexxx: I just want to make a point on getbig.
Alexxx's sister: "getbig"?
Alexxx: Yeah, it's a website about bodybuilding.
Alexxx's sister: Does that have anything to do with that time you were taking pictures of yourself in your underwear?
Alexxx: Well, sort of.
Alexxx's sister: Oh, gross! Just get out.
Alexxx: I will. Just let me measure your calves. I've got the tape measure. It will just take a second.
Alexxx's sister: Why would I let you measure my calves?
Alexxx: So I can post on getbig how they're bigger than those of so-called professional bodybuilders.
Alexxx's sister: Are you insane? Why not post that I have a big butt while you're at it?
Alexxx: Well, bodybuilders don't really want big gluteal muscles. So it wouldn't be as cutting a put down. And I mean to brutally own those so-called pros.
Alexxx's sister: MOOOMMM!! Alexxx won't get out of my room!!