Smartasses. They're everywhere. Usually where you'd rather they weren't. Because they know you don't want them there. Which is why they're smartasses.
Still, you can't deny the fun that general smartassery brings into our daily lives. If you can allow yourself to laugh a bit, you'll usually see that the smartasses of the world are providing a very worthwhile service to all of us: Entertainment at the expense of (hopefully) someone else.
As if we didn't have enough human smartasses, here are a bunch of everyday things being smartasses too. And do you know why? Because they can be.