PB - Idiotic suggestion. I think you would have wasted less time explaining the value of a good forward defensive stroke to the cat..
'If you want to irritate people purely for pleasure, you must never push them too far. If you do this they will explode into anger, shouting, yelling, being abusive and thus releasing all the tensions and anger that we have helped build up. And we certainly don't want to do that. With a little care and attention it should be possible to keep those tensions built up inside them for weeks, or even months - maybe longer. Eventually you may possibly be able to induce a nervous break down, or maybe even actual damage to the brain itself. To avoid this happening, whatever you are doing to annoy, must be perceived to be completely normal ....'
sorry for the thread drift...