Gravity

Occasionally, when my brother and I were wee, we'd pass some time on particularly boring Sundays by lying on the floor pretending that it was actually the ceiling and the ceiling was the floor. After a couple of minutes it was quite easy to see that the light hanging down from the ceiling was actually a strange, thin-stemmed table lamp and the ceiling had comfy chairs stuck to it. Anyway, sometimes I still do the same thing...(though it's harder to get right in photoshop than in your head and I'm just not entirely convinced by the shadows :-(