"Returning a favor" joke
There was a duckling that was crying near a lake, so an owl flew down to see what was the matter with it. "Why are you crying, duckling," the owl asked.
"My parents walked into the middle of the road and got ran over by a truck, so I don't know who or what I am", said the duckling.
"Well, you're a duckling sitting by a lake, so you must be supposed to swim," said the owl. The duckling was amazed at the wisdom of the old owl, and asked how he could ever repay him. The owl told him to simply repay the same kindness to another creature someday.
Thrilled with his new-found sense of self, the duckling went to the lake to go for a swim, determined to someday repay the favor to another animal.
He arrived at the other side of the pond and saw a crying skunk. "Why are you crying?", asked the duckling.
"My parents walked in the middle of the road and got ran over by a truck, so I don't know who or what I am," said the baby skunk.
Seeing an opportunity to repay the kindness that the owl had once shown him, he said, "Well, you're half black, you're half white, and you stink... you must be a Mexican."
Not enough votes...