A/N: A lot of people seemed to want a possession fic so I wrote one that won't meet anyone's expectations. I think the T rating is over-cautious, but whatever.
"Rajeev! Shanila!" Spencer called as he ran in the door of the Wi-Fry.
"Oh, hi Spencer!" Shanila said happily as they both waved to him.
Spencer didn't return the greeting, but clumsily ran over to where they were seated, bumping into tables as he went. He stopped in front of them, panting and bracing his hands on his knees, "You guys!" He managed to gasp out, "We have a big, big problem!"
"Woah, calm down there," Rajeev drawled as he ate a French fry.
"Yes, slow down; what happened?" Shanila said. She looked around, "Where's Billy?"
"That's the problem! He's right here!" Spencer said, throwing his arms out to the sides. He looked between his two confused friends. He stood up straighter and looked awkwardly at the ceiling, "Well, see, I was hanging out with Billy and we started wondering if - you know since he's a ghost - if he can possess people. So, he tried it on me and-"
"And let me tell you, I totally can!" Spencer's face contorted into a smug grin and his voice took on an odd quality, as if he were trying to do an impersonation of the spectre.
As quickly as the smarmy smile came, it disappeared and Spencer dropped his head down, "Billy, stop it!"
Spencer's head snapped back up with an offended expression on his face, "Chillax, Emily Brose, I'm just saying it's a pretty impressive feat."
"Okay, look," Spencer's voice and facial expression went back to normal. Rajeev and Shanila looked at each other uncomfortably, "He can possess people, it's amazing, astonishing- But, he doesn't really know how to… un-possess them?"
"Let me get this straight," Rajeev said. He stood up and tapped Spencer on the forehead, "Billy's in there right now?"
"Um, yeah, duh, that's what we're saying," Spencer's voice returned to a bad impersonation of Billy's.
"Weird." Rajeev said looking Spencer up and down, "You have a grown man inside you."
Spencer narrowed his eyes, "Don't say that again." He said in both his own voice and the rough approximation of Billy's voice. Both of the siblings jumped at the strange jumble of exclamations.
"That is so creepy." Shanila murmured, "And your eyes are kind of glowing, Spencer…"
"Yeah, I noticed that," Spencer dropped his arms to his sides dramatically, "But, we've gotta fix this pronto! I can't take another second of this! I-"
"What's that supposed to mean?!" Billy's voice interrupted.
"There's not enough room for two in here!" Spencer almost shouted, gritting his teeth and feeling more exasperated with the spectre than he ever had before.
"Okay, okay," Shanila said raising her hands in a placating motion, "But, you're the expert on the paranormal; just tell us how we can help."
"Yeah," Rajeev said, "What do you expect us to even do? Perform an exorcism?"
Before Spencer could answer, Billy hijacked his mouth again, "What's an exorcism? Does it hurt?"
"Uh, It's like a ritual to remove spirits or demons," Spencer explained. As he talked he idly reached down and took some of the fries Rajeev had been eating. The second he put them in his mouth he spat them out in shock and stumbled backwards, "Billy! Stop trying to cram food in my mouth!"
"Well sorry, I'm hungry!" Billy retorted. Rajeev and Shanila watched, entranced. It was bizarre how they could discern without question whether Billy or Spencer was talking.
"Anyways… Yeah, Rajeev," Spencer rubbed the back of his neck, "That's what I was thinking. I mean, how else do you get rid of a possession?"
"But, don't you need, like, a priest or something for that?" Rajeev asked.
"I think that's just for demons," Spencer replied, "We may as well try on our own."
"Of course!" Shanila said cheerfully, "Just tell us what we need to do!"