Someone once said that laughter is the best medicine, and I believe it wholeheartedly. Therefore, you may quite often see me laughing. Some of those times, though, I laugh to keep from crying!
Of course, I have been known to cry after hearing a joke, too. Now, that can be taken two ways: one, that I'm crying at a poor joke, or two, I'm crying because I have laughed so hard at a great joke. Either way, I'm still crying. Obviously, I'd rather cry from laughter.