Miracle Births

Monkeys fly out of my butt and I can prove it. But, the monkeys don't like to fly out of my butt when people are watching, so if you'll please come back tomorrow, you'll find monkeys in this room with me and that will be conclusive proof that they flew out of my butt.

For more iron clad logic of this type, read the article below:

Kidnapping ring called "miracle births" by leader