Longman ONLINE
quarterback
...
2 Monday morning quarterback American English informal someone who gives advice about something only after it has happened
The American Heritage® Dictionary of the English Language
Monday morning quarterback
n. informal
One who criticizes or passes judgment from a position of hindsight.
事後諸葛,放馬後炮等等。
Yahoo News:
http://news.yahoo.com/s/ap/20070823/ap_ ... mmigration