I was gonna post a response to Wendy's comment, but this issue deserves a post of its own. 

A constant battle has raged since the dawn of time:  Should the toilet seat be left up, or should it be put back down after use?  I grew up in a house with two sisters, so that answer was already decided:  The seat must be put down after using the toilet.  I caught on quick.  But even in the course of learning, I discovered a few important truths: 
1.  Don't eat while standing over the toilet.  Food can and will fall in. 
2.  Don't lean over the toilet while wearing jewelry of any kind.  It can and will fall in. 
The first lesson was learned when I was about 10.  I felt like an army captain that lost a soldier in battle.  "I dropped my apple in the toilet!  Life will never be the same!  I just can't go on!"  The second lesson was learned when I was about 20.  I never felt comfortable wearing that hemp necklace again (though I still wore it). 

But there's even a point of contention amongst toilet-seat-putter-downers:  Should one or both pieces be put down?  Many women argue that only the first part of the seat needs to be down.  That way, everybody's happy.  Girls can use it without lifting the lid.  Guys can still use it, and they don't have to do anything when they're done.  When I hear this argument, I pretty much explode.  If you're gonna put anything down at all, put both parts down.  When you only put the first part down, there's still a huge opening that's just asking for stuff to be dropped in it.  Plus, there's the whole thing with animals drinking water out of the toilet.  We all know it's gross, but they do it anyway, and they'll continue doing it no matter how much fresh water you put all around the house.  Animals like dirty water.  But if you use any type of harsh toilet cleanser or toilet cake, you definitely don't want your pet drinking out of the toilet.  Pets are stupid.  They'd eat rat poison and dynamite if you pretended to drop it off the kitchen counter while you were cutting up meat. 

So the bottom line is this:  Both parts of the toilet seat must be down at all times when not in use.  That's the final answer.  There's no need for more discussion.  I've settled the argument once and for all.  But if you're one of those people that only puts the first part down, I hope you simultaneously drop your toothbrush, toothpaste, hairbrush, toilet paper roll, apple, glasses, gold necklace, and diamond ring right in there.  You deserve it. #entertainment