When I find it highly amusing when other people fall over?

[flutterbee]

It just makes me LOL, I can't help it.

In Glastonbury one year I saw a bare-chested man, carrying two full pints of lager, perform an incredible upright slide down a muddy hill on one foot, protecting his pints the whole way down. Unfortunately he achieved this marvellous feat only to hit the bottom of the hill and fall. He then trudged all the way back up the hill for two more pints. It was the funniest, most impressive and yet pathetic sight of my life. I love that guy.

I mostly laugh at the shock people feel, myself included, when sliding or slipping suddenly. I think it's instinctive. The laugh happens automatically. And has no malice. But I never laugh at a child or ill or elderly person falling. That just makes me sad.