The Doctor and his companion were traveling through time, minding their own business, when all of a sudden they hit a block.
Donna peered out of the TARDIS door.
"What the hell is this, then?" she cried, her voice raised more than normal. "Travelin' through time with you, and I've never seen a giant block!"
The Doctor frowned and peered out the door. "Oh, no," he said, groaning. "Not this."
"What is it?" Donna turned, hands on her hips.
"A Wrytirs Block." He had paled considerably by now and looked panicked. "Donna, this may come as a surprise to you-" Donna snorted derisively- "but you and I are being written. All our adventures are written by 'wrytirs', or 'writers', and if a wrytir runs out of ideas we hit a Wrytirs Block."
"A wrytir? Like that Steven Moffat bloke?"
"Yeah. Except, if I'm right- and I usually am- this is a Fan Fiction Wrytirs block."
"Fan fiction? So, someone's writing about somethin' that never actually happened? Or that they think should happen?"
"Yeah, except they're not, see, because they've run out of ideas."
"Pfft." Donna looked at the block, which was big, ugly, and seemed to be made of concrete. "Can't we give them some ideas, then?" She leaned towards the block. "Write about me an' the Doctor visiting Mars and eating Martian food! There, an idea." She looked proudly back at the Doctor. The block didn't move.
"No, you have to give it a good idea. Like-" he paused for a moment, then leaned forward and whispered to the block the greatest fan fiction story idea ever. An epic adventure, complete with drama, humor, romance. A story that would keep generations of readers in awe.
Unfortunately, a glitch in .net caused the story to be erased forever after it was written, and no one ever got to enjoy it.