This superstition seems to have come to us from Asia. The Mandarin word for “umbrella” also means “fall apart”. I suppose this means that if you open an umbrella in the house, your home or family might fall apart.
Here’s a story I found about how Filipino parents would scare their children into not violating the superstition by telling them that bugs would fall out of any umbrella opened indoors: http://pinoystuff.com/folklore/superstitions/umbrella.htm
I always thought it was cause its just kind of stupid to open the thing and then wrestle it through a door. My WAG: Once, some lumox was having such a time with it and couldn’t understand the physics, so someone told him it was ‘bad luck’ and to go outside first.
I was told that early versions of umbrellas didn’t open as easily as they do now and thus were unreliable. You had to do a lot of tugging then BAM! They’d open really hard. Consequently the force would make it jerk and cause damage and harm someone. So people avoided opening them indoors. So it wasn’t bad luck to open it indoors, just dangerous. It evolved into the superstition we know today.
MaryAnn
I’m sorry you didn’t win, mom, but I’ll give you a constellation prize! -Greg
I’m with MaryAnn on this one. The bad luck superstition grew from the hazards of opening an umbrella indoors. Another danger is the possibility of knocking something over with your personal canopy.
Walking under ladders and breaking mirrors started in a similar manner.
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