10. Cats' facial expressions.

9. The need for the same style of shoe in different colors.

8. Why bean sprouts aren't just weeds.

7. Fat clothes.

6. Taking a car trip without trying to beat your last time.

5. The difference between beige, off-white and eggshell.

4. Cutting your bangs to make them grow.

3. Romantic stuff like mushy cards and flowers.

2. The inaccuracy of every bathroom scale ever made.

And the number one thing only women understand:

1. Other women!!!