Okay seriously, while people may joke about it, an earthquake can be a scary experience(just ask me, I've been through 2 big ones that lasted 2 seconds each) to go through, especially alone. If you live in a place like California, that might be a bit of a earthquake hazard, because they happen so often. If you ever find yourself in a situation that's like what you experienced but in greater intensity and longer duration, follow standard earthquake proceedures.