Believe it or not, the idea to post this came to me in a dream last night. Whom am I to defy the mystical forces of the subconscious?
Given that I don't generally even particularly like puzzles, it seems all the odder. If I were (even more) hypochondriacal, I'd be worried that a sudden, dubious mental flurry of this sort means some kind of underlying neurological issue, but instead I think I'll attribute it to too much Ramadan eating too close to bedtime.
Feel free to solve this, I fear, deeply obvious little riddle.