Fluttershy led Twilight into the wind tunnel chamber. Most of the changelings were standing in single file, eagerly waiting their own turn in the chamber. Cowley the minotaur had found out how to switch the tunnel from horizontal to vertical blow and had generated a massive updraft, inside which about a dozen changelings tumbled, hovered, and roughhorsed with obvious glee. A group of changelings assisted those exiting the chamber, some of whom were a bit motion-sick as they readjusted to the outside. Dragonfly, Stinger Charlie, and a few of the strongest flyers among the changelings had taken printouts of their own time in the chamber and were comparing notes, each defending particular qualities of their bodies which made their particular flying styles better.

And then there was the one responsible changeling in the room, Occupant, who far from stopping the madness was quite cheerfully metering the line, letting one changeling into the wind tunnel as another tumbled out.

“I tried to tell them to stop,” Fluttershy whimpered. “I asked most politely. But they were having so much fun, and… well…”

The discovery of The Fun Machine, from the fanfic Changeling Space Program.