The Doctor was tired. So tired...
He walked on a field full of bananas, sticking out of the ground. For once not searching for a scientific explanation, he walked around the fields, snatching a piece of his favourite fruit here and there and thought he was the happiest Time Lord in the world (which he always was, anyway).
At the end of his path, he suddenly saw another one of his fantasies.
His Rose, completely naked, covered with banana mousse. She represented the banana on a banana split.
Licking the chocolate sauce of her fingers she said, "What's wrong Doctor? Don't you want to put that oral fixation of yours to use?"
With a big grin on his face, the Doctor began to 'eat'.
"Oh, Doctor!" Rose purred, "That's it! Ooooh, Doctor! Doctor! Doc-"
"Oh, Rose! You taste sooo good..."
"What...? Doctor, wake up!"
He fell with a thumb to the floor. Looking confused around him, he realised that he was in the console room.
"Rose... What happened? Why are you dressed?"
"Well, you were the one who wanted to make a quick trip to Obsalum XII on three o'clock in the morning. I don't even know why-" She stopped abruptly when her glance wandered down. "Doctor... what exactly were you dreaming about?"
Following her gaze, he thought, "Oh, I sure hope that's a banana too..."