C68 Prep to get busy

What had his sister just asked him? Is it safe to say that she was proposing to show him her pussy, or would she say she was inquiring whether he needed to have sex?

“It was sex with me dummy, what does that mean” His brain slammed him again.

“No,” he said. “All in all, I would, but ermm... no, I can't…I uh. I better go.”

His sister said nothing, of course she didn't need to