1. Don't have sex within six hours of listening to the "O Brother, Where Art Thou" movie soundtrack. You will not orgasm while singing "Big Rock Candy Mountain" over & over in your head.
"In the Big Rock Candy Mountains,
All the cops have wooden legs,
And the bulldogs all have rubber teeth,
And the hens lay soft boiled eggs..."
2. Multiple cleaning chemicals should not be mixed in a single shower in a small, enclosed bathroom. Your eyes will water. Your tongue will taste funny. And your lips may or may not go numb. (The mildew in the tub, however, will disappear... so it might be worth it.)
3. Once you begin to sing "Big Rock Candy Mountain" in your head, you will be unable to stop on your own.