The better half?

There's a list of unwritten rules that come with living together with someone. They range from levels of cleanliness (read rosters for doing the dishes and vacuuming) to concepts of personal space (read the girl gets the entire wardrobe, and a large portion of storage space in the bathroom!). While most of these rules are quite obvious, for the average man they constitute a minefield that must be navigated with great care - any false step can lead to serious repurcussions (read crazed irrational screaming fit!).

Take for example tonight. It seems that I accidently used the wrong toothbrush. Apparently, this is considered extremely gross in some parts of the world (the female parts). Me? I don't see the fuss. But no, this insignificant incident is enough to launch into a hissy fit of epic proportions! I can't help but imagine if this is seriously how major arguments around the world begin? Maybe Saddam accidently used George's toothbrush? Or vice versa? Maybe the real reason for Brad and Jen breaking up was an innocent toothbrush mistake? And they call themselves the better half?