-the ocean, as soon as you jump in, you step in something gross;
-riding a bike, when your learning, you fall off a lot, but soon you get the hang of it, and you only fall of every once in a while;
-an Ipod, full of songs of every type;
-the radio, you can tell it what you want, but it never really gives it to you;
-a can of beer, you drink and you're happy, but as soon as the can is empty, you're left worse than when you started;
-a tree, it gets stronger and stronger, but it's still going to die eventually;
-a horse race, you're going really fast in a circle;
-a silly hat, it's fun to wear, but there's really no point to it;
-a book, it makes you happy, but you know exactly when it's going to end;
-a good fight, you come out beaten and bruised, but with the adrenaline pumping; you feel great regardless.