The Doctor had stupidly wandered into a large and gloomy cave.
Naturally the large and gloomy cave had an equally large and gloomy occupant, a beast of at least 7 feet tall, who really wanted the Doctor for his supper.
He would have had him earlier, but the doctor had arrived just after dinner.
The doctor found himself stuck in a sort of disgusting parlour.
The creature's vocabulary was somewhat limited.
"I am not supper. I am the Doctor."
" I will not taste very nice.”
The doctor thought it was going to be a long evening.