Do you ever have a moment when something sparks a memory from the very dim recesses of your mind? There's a little tendril of time, flimsy as smoke, trying so hard to come forward. But try as you might, you just can't reach it. The air of so many thoughts, so many things, just disperse that smokey trail until nothing is left.
I hate moments like that. Hate them. Where's Dumbledore and his Pensieve when you need him??