Blind Bat
 
A vampire bat came flapping in from the night covered in fresh blood 
and parked himself on the roof of the cave to get some sleep. 
All the other bats smelled the blood and began hassling him about it,
 asking him where he got it. 
He told them to leave him alone and to get some sleep,
 but they persisted until he finally gave in. 
"OK, OK, do you see that tree out there?" he asked, 
pointing a wing through the mouth of the cave.
 "Yes, yes, yes!" the bats all screamed in a frenzy. 
"Good," he said, "because I didn't!"