vampire blood

A vampire bat came flapping in from the night, face all covered in fresh
blood and parked himself on the roof of the cave to get some sleep.

Pretty soon all the other bats smelt the blood and began hassling him
about where he got it.

He told them to nick off and let him get some sleep, but they persisted
until he finally gave in.

"OK, follow me", he said, and flew out of the cave with hundreds of bats
behind him.

Down through a valley they went, across a river and into a huge forest
of trees.

Finally he slowed down and all the other bats excitedly milled around
him, tongues hanging out for blood.

"Do you see that large oak tree over there?" he asked.

"YES, YES, YES!" the bats all screamed in a frenzy.

"Good!" said the vampire bat, "Because I didn't!."