Ah. And this was exactly why Penny preffered to be on the asking side of questions. A twenty one year old should not have cause to blush like a fifteen year old. It wasn't even remotely close to being fair.
"Oh. Of course. I mean, I knew that." And she did ; well, part of her had known that it was just the other tangents that she hadn't been sure about.
And there was no earthly way she could answer his comment about people being interested in each other for physical reasons without sounding like an utter idiot. Or worse, a groupie.
Penny settled for the smartest option which was nodding her head and trying to look intelligent. She could only hoped it work.