For the last two nights I've been out drinking when it suddenly began pouring. Both nights I came home dry as a bone.
If you're like me, you've left behind and umbrella or five at various bars around the world. Therefore I have no problem with asking for a free one from a bar's lost and found box.
A friend of mine showed me the lost umbrella box at one bar. It had at least 30 umbrellas in there. So I tried several until I found one that was perfect. My friend was not happy that I was tempting bad luck by opening umbrellas indoors, but I find that the best response to other peoples' superstitions is direct insensitivity.