His instructor said, ‘When the siren goes off, rush out the tunnel and swim until you find a red sticky ball. Address the ball and say “I’m a sperm” to which the ball will reply “I’m the egg”. You will then work together to form the embryo. Do you understand?’
The sperm nodded. Days later, the sperm was sleeping when he heard the siren. He was the first one out of the tunnel and the first to reach the sticky red ball. He was millimeters ahead of all his comrades. He bowed courteously and said: “I’m a sperm”.
The red sticky ball smiled and said: “Hi, I’m the tonsil”