Have Sex. With each other.

Weiss was stolid as she said it.

"What," Yang said flatly.

"With Yang?" Ruby asked.

"I'm afraid so," Weiss said. "The effects only wear off if you practice sexual intimacy with someone else suffering from the E.N.A.B.L.E.R.'s effects." She gestured around. "And you're the only humans on campus who have been exposed to it."

"Can't we get someone else to-?" Yang stared.

"I will not **** another student to ingest that chemical," Professor Goodwitch said.

"But she's my baby sister," Yang said. As she looked at Ruby, the idea seemed tantalizing, but she had to fight it. "I helped raise her. It's like it was only yesterday that I was changing her diapers."

"That's because it probably was yesterday," Weiss said.

Ruby blushed, but she was in no position to argue against Weiss's insult.

"Okay, okay," Ruby said. "We'll... we'll do it."

"What?" Yang asked. "But-"

"There's no other way," Ruby said. "Let's just go back to the dorm, do it, and never speak of it again."

"That's the other problem," Weiss said. "I don't know for sure whether that alone will disperse the effects."

"What do you mean?" Yang asked.

"I've only tested the limits of the E.N.A.B.L.E.R. inside this cage," Weiss said. "The only way to make for absolute certain that the effects have worn off is to perfectly replicate the tests." She tapped the cage for emphasis.

"No way," Yang said, her voice going low. "We are not having sex here."

"It's the only way to be sure," Weiss said.

The sisters looked over the audience, all of whom watched them intently. No one said a word.

"I can't do it in front of all these people," Ruby said.

"The way I see it, that's perfectly appropriate," said Professor Goodwitch. "You two touched Schnee's experiment without asking. This is the punishment."

"Seriously?" Yang asked.

"It's either this, or you two can masturbate your way through your Beacon education," Professor Goodwitch declared. "Well?"