Wouldn't say boo to a goose

Why when someone is timid, do we (in the UK at least) say "they wouldn't say boo to a goose"?

Well according to this site it is:

Because of the supposed stupidity of the bird of that name, the word 'goose' has meant a simpleton since the 1500s. The word 'boo' in this context is the sudden, loud version of it...the one adults sometimes use to surprise or 'frighten' children...rather than the disapproving anti-cheering version. So, 'saying boo to a goose' - whether human or avian - is about the least brave thing one could imagine doing and, as a result, very shy people are accused of being unable to do even that.

Another Friday - another fact

The mummy of Hatshepsut was identified this year by means of a tooth.

Welcome to another Friday 13th

A cockroach can live without its head for nine days before it eventually dies of starvation.

Five random facts

There are more TV sets in the US than there are people in the UK

The tomato is actually a fruit as it contains seeds, it is a berry like the strawberry or raspberry!

The aeroplane Buddy Holly died in was the "American Pie." (Thus the name of the Don McLean song.)

There are only four words in the English language which end in "-dous": tremendous, horrendous, stupendous, and hazardous

Soldiers from every country salute with their right hand.