Laws of Nature (That you dont need a degree to discover)

This is a time where we as fellow dopers can share various laws that we have discovered in life. Now the one I will about to share with you is no doubt one of the most controversial (but very much true) laws that is underlying in nature. Only those with keen enough eyes have been able to perceive this anomaly in life…but now, thanks to the STMB, ALL can hear of the law which explains so much in life. It is the Womans Age to Purse Size law! Yes! Let me elaborate. The older a woman gets, the larger her purse gets. This explains so much doesnt it?
Now this is the time to share laws that you find underlying in nature! Feel free to share. Make sure you name the law, and then explain it as best as you know how. Need ideas? Take the Better food to Hunger ratio! This simply states that If you are hungry enough, ANY food will taste good. Or perhaps the Transitive Butt Property (Thanks to www.homestarrunner.com for this interesting tidbit) where The IQ of someones Butt is greater than or equal to the IQ of someones head.
So come on dopers! What have you learned in life?

Haven’t learned this but heard about it & observed it: people in bars start looking good closer to closing time. Or something like that. I guess it means there are horny people who will just … well, I think you know what I mean. Will maybe pop back later …

Junk will expand to fill available space.

No matter how hard you throw a dead fish in the water it still won’t swim.