The Doctor and Amy stepped out of the TARDIS and into some the movie Snakes on a Plane
"Look out Doctor" Amy yelled over the sound of snakes
"There are snakes on this plane"
The Doctor pulled out an unrealistically sharp samurai sword and cut the plane in half before riding a conveniently placed bear down into the ocean.
"Look out Doctor" Amy yelled over the sound of water
"If people spend too much time in water they die"
The Doctor grabbed a conveniently place American flag and impaled the ocean with it, ending it's reign of terror for good. Then he had some more sex with Amy.