Great analogy!!!! I love mental pictures. I'll remember that one.
To BrownOut:
Another example is water faucets in your home.
If you take two 5 gallon buckets to your faucets (kitchen and bathroom) and open the valves, you will get 10 gallons much quicker than you would if you only opened the kitchen faucet and filled them both.
The two faucets are in parallel off of your water supply manifold in your home. Opening both faucets doubles the flow of water, thus your water resistance is AT LEAST HALF of what it is when only one faucet is open. If one valve has more flow by nature (like a bathtub), it also has the least resistance. So opening another valve (the kitchen sink) decreases the overall resistance to the point it is LESS than the bathtub resistance alone.
Does this help or make sense?