Wry Baby site will provide you with a handy chart to split your responsibilities (click to enlarge):

You find out interesting things when you have sons, like...

1. A king size waterbed holds enough water to fill a 2000 sq. ft. house 4 inches deep.

2. If you spray hair spray on dust bunnies and run over them with roller blades, they can ignite.

3. A 3-year old Boy's voice is louder than 200 adults in a crowded restaurant.

4. If you hook a dog leash over a ceiling fan, the motor is not strong enough to rotate a 42 pound Boy wearing Batman underwear and a Superman cape. It is strong enough, however, if tied to a paint can, to spread paint on all four walls of a 20x20 ft. room.

5. You should not throw baseballs up when the ceiling fan is on. When using a ceiling fan as a bat, you have to throw the ball up a few times before you get a hit. A ceiling fan can hit a baseball a long way.

6. The glass in windows (even double-pane) doesn't stop a baseball hit by a ceiling fan.

8. Brake fluid mixed with Clorox makes smoke, and lots of it.

9. A six-year old Boy can start a fire with a flint rock even though a 36-year old Man says they can only do it in the movies.