Canker sores come, and canker sores go. And then they return and you never quite know, how long will this last? is it just the one this time or three? and how long will they give me in-between? And that special kind of trauma, that unique misery yields a special kind of bliss, being canker-sore free. Makes you appreciate life just a little bit more, with much more intent, until the next time that damned thing surely returns, hell-bent, to your life once more.