Diana interrupts

"If you kept going the way you're going, he would probably climax," Diana says to Grace, "but it's a bit early in the class for that. I still want to show the class what oral sex looks like on a man, and potentially demonstrate intercourse if we have any volunteers for that."

Grace, much to your dismay, slows her strokes.

"Well, this was really interesting," she says hesitantly, "I was excited to see what happens when he climaxes, but I guess we'll see that later?"

"Absolutely," Diana nods, "for now, does anyone else want to touch Joe before we move on to oral sex?"

Before anyone can speak, Grace asks "Can I try?"