Sperm are tiny and wriggle; the egg is large and waits. 

Man’s body is just the penis’ automobile. 

Kissing also indulges the drive to eat.

Sexual union: Nostalgia for the unicellular life. 

Ejaculation: Victory, surrender or a peace parley?

The roller coaster induces the thrill of losing control. 

Youth is attractive because it may live to raise its young.

Fantasy life: Nature’s cable television.

When the ship finds harbor, beware of stowaways.

Remember, viruses want to get ahead, too.