Give her a mouthful.

Robert looked around, surveying the location and situation. Finally, he found one possible outcome.

"Well, Laura," he said, trying to add a tone of mock seriousness, "I certainly agree the Nurse is hot. However, regardless of her temperature, I think it is time for her to get to work on her desk. Should she require the assistance, I will be behind her."

Miss Hart took a moment from her station between the Nurse's legs to look at him quizzically.

"I'm not sure I follow," she said.

Nurse Pennyweather, however, jumped away from the place where their lips met.

"I do!" she said.

She then took a kneeling position atop her work-station, allowing Robert a brief glance at her ass. Next, she stood on it, and turned to Robert, gesturing for him to follow. Since it was his idea initially, Robert needed no further encouragement to take his position behind her, separating her cheeks the way he had previously done to Miss Hart...

Who was now sitting on the floor, watching, clearly not sure what to do.

"And I should...?!" she asked.

"Well," Robert said, "since we clearly ruined the Newton's Cradle, it can be your job to find her a new set of orbs with the same sort of mobility."

Miss Hart remained frozen and confused. This changed, however, when Robert re-entered the Nurse. Soon, he felt that each of his partial exits was marked by his balls being swept by the teacher's talented tongue.