"Troy and Abed in the MOOOOORRRRRNING!"
Live, as always, from the Study Room.
"And we're back, with our very special guest, the one and only Danny Phantom, who will tells us how his life is going, and show us how to make ice sculptures!"
Danny looked up from the little one he was making with his gloved hands. It hasn't taken any particular shape yet.
"Well guys, after I patched things up with my parents (thanks to you guys' help, by the way), they took off for home, and I'm allowed to come and go as I please. I'm just stayin' here cause…you know…Jazz."
"Oooooo!" said Troy.
"Aw, that is sweet," added Abed.
"So anyway," Danny continued, "How to make an ice sculpture. Well, first, obviously, you need ice powers and…"
Suddenly, Danny's ghost sense went off, and already, he knew who was coming. He reached out a free hand for the two hosts to hold onto, and they turned invisible.
But it wasn't a ghost that arrived.
It was Jeff—being his usual, condescending self.
"Hey guys, don't tell me you got the visitor kissing you asses too," he said, looking down at his phone while doing so, "Do I really have to spell it out? This is not…"
Finally, he looked up. The room looked empty to him.
"…a real show? Huh!" he said, "I could've sworn I…"
He looked around. There was nobody in the Study Room for him to see, right?
No. Jeff found someone who was still there and visible to him.
"You're still here?" he said to the individual who stumbled on this crossover fanfic, "It's over! Go outside."
Jeff started to leave through the way he came in, but then turned one last time to his audience.
"Go."
"Troy and Abed in the MOOOOORRRRRNING!"
The disembodied voiced of Troy, Abed and Danny scared the bejeebers out of Jeff, and he started to wonder if Greendale really is haunted.