Bloody Bat
A vampire bat came flapping in from the night, his face covered in fresh blood, and parked himself on the roof of the cave to get some sleep. Pretty soon all the other bats smell the blood start hassling him to find out where he got it.
He told them to go away and let him get some sleep but they hassle him until he gives in.
"Alright, alright, already... follow me then", he said and flew out of the cave with hundreds of excited bats behind him. Down through a valley, across a river and into a huge forest. Finally he slowed down and all other bats were getting excited as they milled around him, thirsty for blood.
"Do you see that large oak tree over there?" he asked.
YES, YES, YES!!!" the bats all screamed in a frenzy.
"Good for you!" said the bloody bat, "Because I didn't."