I didn't say it was true knobby, or that it was a nice thing to say, it wasn't. I just found the phrase funny. I'd have thought it was just as funny if it was said about me, infact it would be more fitting considering im only 5'1. For once knobby, I wasn't getting at you :-)
I try to have serious conversations with my friends, but they invariably switch pathways and we end up rolling around laughing. Nothing wrong with that!