At first all Ben can feel is the urge to bend over hand shaking he puts them on the floor ending up on his hands and knees. Not long after David does the same thing. Ben looks back to see David rear poking high in the air his pants pulled tight. A chill runs down his spin and it ends right at the base of his back.
Ben look over at David's rear his heart racing. Ben feel the tingle in his back lingering at the base of his back moving slowly into the top of his butt. Soon follows a crackling sound from David's rear. The sound soon comes from his own rear moments later.
"Oh oh oh!" David moans. "What is happening now?"
"I don't know....something terrible!"
Ben then sees a soft bump appearing at the top of David's rear. the pants when David moves press it back flat a few moments then the bulge pushes back until it tents back his pants. He then feels a pulling sensation os his back. Hands shaking Ben reaches back and feels his rear. To his horror he finds a lump at the top of his butt right where it starts to part. "Oh no not that anything but that..."
"Oh oh oh!" David moans. "What is happening to me?"
Ben presses his fingers into the lump its soft and he can pressing it back in with his finger. When he presses harder he finds something hard right below it and the hard spot is moving toward the lump.
"Oh no!" Ben says gritting his teeth. "We are getting tails!"
All of a sudden all David can do is pant. Ben start to feel the sensation to pant long and hard soon after and he feels a part of him, a new part, pressing into the back of his pants. Ben grits his teeth trying to keep from panting. The sound of David panting starts to echo in the hallway as Ben looks over and sees David's pants sticking out almost 6 inches away from his rear something inside his pants twitching slightly. The seams of David's pants are straining to hold in the pressure. Watching this takes Ben's mind off of his breathing and he ends up panting hard as well. With each heavy breath David takes Ben sees the bulge stretch at David's pants harder until the cloth is as tight as a drum. Then it starts. First it's a tiny stretching sound then in the middle of David's pants, near the top of the bulge, the cloth's color lightens then a tear forms. Seconds after David's pants slipt open right down the middle and a foot long hairless tail pops out. Before Ben can grasp what he just saw, he feel a pain fill his spine. He grits his teeth panting even harder as he feel he back pressing into his pants then he hears a ripping sound then a feeling of relief. He looks back in horror to find a hairless tail waving behind himself attached to his own rear.
Both he and David pant hard for about 10 minutes until they don't feel anything happening any more and their breathing returns to normal. All this time Ben was forced to watch David's new tail grow an inch with every hard breath his friend made until waving in his face was a long grey donkey's tail the tassel tickling his nose.
A few moments later David slowly gets back to his feet and Ban find the sensation to bend over has gone away. Ben gets back to his feet and looks behind him with horror and hands shaking he feel at his new tail.
"What do we do now?" Ben says with a shaky voice. "We have tails! TAILS!"
"I don't know lets get out of here fast before we get any worse!" David says pointing. "This way quick!"
David runs down the hall Ben following quickly tails waving as they both walk quickly down the hall way.