Black velvet

"The mere mention of the material to my brother-in-law is enough to make him wince - just the way you do when a sadistic schoolteacher scratches chalk across a blackboard. 'It's a teeth thing,' he says, 'Like when ice-cream sends a shock to the nerve.'"

Lucy Ryder Richardson, See me, feel me, touchme, in The Independent newspaper, 3.1.2002, p.8