Posted by Pamela on February 21, 2008 at 23:43:
In Reply to: Empty cans posted by RRC on February 21, 2008 at 17:13:
: : What does this mean "two empty cans make a lot of noise"?
: The phrase has many variations but it is usually just about "empty cans" not "two empty cans".
: Empty cans make the most noise.
: Literally, if you hit a full can with a spoon, you get a dull thud, but if you hit an empty can, it may ring like a bell. Metaphorically, people who don't know much (empty cans = empty heads) often are very vocal with their opinions, complain a lot, etc.
"Empty vessels make most sound" is the version I've heard, with the same meaning. Pamela