So the 12th Doctor was announced the same week as Shark Week, and this happened.
"Doctor!" Clara exclaimed. "Aliens are attacking! What do we do?!"
The Doctor proceeded to violently devour Clara.
Because he was a shark, and that's what sharks do.
"Behold!" the cult leader said. "The Last of the Time Lords! Our God! Harry Saxon! The Master!"
He moved a curtain, and revealed a seal wearing a black hoodie.
The Doctor killed everybody int the room.
Because he's a shark.
"Hold on." Brian Williams said. "How are you breathing? You're a shark."
The Doctor bit off his head before eating the rest of his body.
"You're never going to see them again!" River shouted.
The Doctor ate River.
He is a shark.
He feels no remorse.
The Tenth and Eleventh Doctors stared at each other, their respective phone boxes parked across from each other in the small room.
"Well," Eleven said. "Hello again."
Suddenly, a third TARDIS appeared between them. Out of it walked a shark in a suit.
The other two Time Lords stared at it.
"The hell?"
The Doctor ate the two of them, causing a paradox, destroying the universe.
But the Doctor doesn't care
Because he's a shark.
I know what you're thinking:
"Wasn't there already a shark in the show? They already announced the 12th Doctor, and he isn't a shark!"
Hey...Shut up :D