one wouldn’t say boo to a goose—said of an extremely shy person:
- Her taste in movies was pretty unusual for someone who wouldn’t say boo to a goose.
one wouldn’t shout if a shark bit him—(Austral. sl.) said of an extremely mean and miserly person:
- If you don’t shout the next round of drinks, you will be one of those tight bastards that “wouldn’t shout if a shark bit him.”