Francis learns a lot a college

Francis looked around and spotted two pretty coeds studying on a bench under some oak trees. They were in a pretty secluded spot, and there were not many students out as classes had started. He walked over towards them. He tightly gripped the gem and thought hard. He then walked right up to them. The two girls ignored him as they compared biology notes. Francis waved his hand in front of them, but they still acted as if he was not there. He touched one of the girls on the nose, but all she did was reach up and rub the spot he touched before going back to her studies. Francis whispered something in her ear.
The girl furrowed her brow and looked at her study partner, "Claire, what kind of panties are you wearing?"
Claire looked up. "What kind of question is that?"
Francis whispered in Claire's ear.
"I'm wearing light blue bikini's. What about you, Delores?"
"Oh, a thong. A black one. Hey want to switch?"
"Sure, why not. I don't think anyone will notice."
Both girls stood up. Claire removed her khaki capri pants, and Delores removed her jeans. The two decided to remove each other's panties and put them on each other. Francis watched with delight. The girls were roughly the same build. After switching, they sat back down.
"That was fun!" said Claire.
"Yeah," agreed Delores, "we should do this every time we see each other."
"Sounds good! Now what do you have written from Friday's lecture?"
Francis moved in front of Claire. He whispered in her ear. Then he moved to Delores and did the same. Next he went back to Claire and undid her pants.
"You know, I think I'll practice my blowjob techniques for a few moments," she said.
"Oh, OK," said Delores as she went back to her notes.
Francis put his dick up to Claire's lips, and she started sucking, licking, and kissing it. Delores looked up, and it seemed Claire was giving a blow job to an invisible man.
Francis finally blew his load all over Claire's face, though neither she nor Delores seemed to notice. They both got back to studying. Francis's cum dripped down Claire's face.