A vampire bat

A vampire bat came flapping in from the night, covered in fresh
blood. He parked himself on the ceiling of the cave to get some
sleep.

Pretty soon all the other bats smelled the blood and started
hassling him about where he'd got it. He told them to piss off
and let him get some sleep.

However, they persisted until he finally gave in. "Okay, follow
me," he said as he flapped out of the cave with hundreds of bats
behind him.

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

Finally he slowed and all the other bats excitedly milled around
him.

"Now, do you see that tree over there?" he asked.

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

"GOOD," shouted the bat, "BECAUSE I DIDN'T!!!"