Walt blinked at her, trying to wrangle with the reality that she had just asked him that. On the upside, the turn this had taken was very quickly resolving the situation downstairs. He shifted once more and brushed a hand down over his pants in a way that he hoped was inconspicuous, which essentially hid what very little was left of his erection. On the downside, he would have to say something sooner or later in response.

She had to know at least something about this, didn't she? She was young, but not — not that young, was she?

"When you're — uhm, excited," he replied, before realizing that this probably wouldn't be enough of an explanation for her to really understand. He considered briefly, then tried again. "When you're with someone you like. Someone you find attractive. It's —" he glanced at the door to the dining room, then lowered his voice slightly. "— the first step in the process for... when men and women are alone together."