Why do people say "heads up" when you should duck?

@cndn420 (2062)
Canada
September 20, 2008 9:45am CST
What is the origin of the phrase "heads up"? Why don't we say "heads down"? When you say "heads up" to someone, you are instructing them to look up and be aware or something that may be flying directly towards them. "Heads up", therefore can be used to say more than just "duck". You don't always want your head down when someone yells "heads up" What other meanings can "heads up" have?
1 response
• India
20 Sep 08
Well.. actually it doesn't only mean warning against something that is going to hit u.. but in general.. it means an advance warning or signal.. it refers to being aware and watch out... the trm is used in baseball and american football to signify alertness