Have you ever experienced distraction to such a point that it drives you nuts? Like when you find yourself reading the same paragraph over and over again because absolutely nothing at all sinks in--in spite of your best efforts to concentrate--because your thoughts keep distracting you?
Or when you're standing in line at the supermarket or sitting in a bus on the way to somewhere and those thoughts pop up unbidden in your head? Memories of something so good, so delicious, that you just can't stop yourself from smiling. Until you notice the people around you starting to give you an odd look or two. You pull yourself together and do your best to look blasé, but after a few moments those memories engulf you once more and you even find yourself softly (or so you think!) verbalizing some of those thoughts. And that faraway look is in your eyes and that silly grin is on your face again. This time, though, you notice people are starting to edge away from you...giving you looks that say they think you've got a few loose screws or that you're missing a few cards in your deck. Looks that say they think you're an escapee from the funny farm.
But they'd be only half-right, because your mind is still in the funny farm. Or at the very least, it's a frequent visitor.