As near as I can tell, this is what my wife says to herself each time she leaves the house.
"Ok, I'm ready to go. What am I forgetting? Hmmmm.... I've got my keys, my wallet, my cell phone.... Oh, I know! I forgot to turn on all the lights in the house! There's this one, that one, that one waaaay over there, and this obscure one that Mike doesn't even know about it. There! So bright! It's like I'm creating a photon parade everywhere I go! Yay!"
And then, *poof*, she's gone.