Would you cut your nails on the Tube? It's a tricky one for me, as I often file my nails on the Tube and I'm sure as far as some people are concerned I may as well be openly picking my nose. But I think there's something about nail clipping that shouldn't really be done in public. Mainly because the cuttings have a tendancy to fly all over the place. Can you imagine being hit by a stray piece of nail?