Noah’s Ark
When Noah had his ark built he called all the animals together. When they had assembled he told all the males he would take away their privates. He said he couldn’t have them making love because it would risk them having children.
In return he would give all the males a claim ticket and when they got off the would get their valuables back.
So every day for the next 40 days, the rabbits were running in to their wives asking them to get up on their backs and look out the window for land.
This went on for a while until one day a rabbit ran in all excited and jumping around the place. His wife thought he was mad and asked him if he saw land.
“No”, he replied waving a ticket around. “I’ve got the donkey’s receipt.”