They're having a "girls' night out" that night

"We're supposed to have a "girls night out tonight. It's a shame, because it's something we've had planned for a while, and it would be really rude to blow it off." She sighed. "I really wish you could come with us."

"Well, what if I do come along with you? It wouldn't be a big deal, right?"

"I wish you could. It's just... the rules are, no guys. There's no way you could come. Well, that is, unless.... No, there's no way you'd be interested."

Chris was turned on enough by then that he wasn't going to let anything stop him. "Sure I would. What would I have to do?"

"Well, like I said. It's a girls night out. So you'd have to come... well, dressed as a girl."

Chris was stunned. "Uh, I don't think there's any way I could... uh...."

"Oh come on, sure you could. I know you could. It would be fun!"

"How about if we do something tomorrow, instead?"

"Well, it's just that I'm going to be really busy studying for the next couple of weeks, and I won't really have any time. I was hoping you would come out with us tonight, then afterward we could come back here and spend more time together, alone."

"Oh wow, I mean, uh, I don't know." He reached for something to say, but Lisa could tell she had him hooked. "Are you sure there's not any other way?"

"No, but it will be fine. Come on, let's head into the bedroom and start getting you ready."