brogdale
Coming to terms with late onset Anarchism
Disagree.There is no point, much like saying boo to a goose.
Although there is no conventionally rational explanation for wanting cake but not eating it, saying boo to a goose/geese (that may be aggressive is startled at/close to their nest), might well shock the attacking avians into some sort of retreat.
Hence, the phrase to describe someone too timid to speak up.