Hi Dario. The idiom "Jump the gun" originated in an athlete starting a race before the starting pistol is fired. It refers to someone or an action when it is started earlier than expected or when something is spoken without required thinking. Example: He jumped the gun and started yelling at his father before he knew all the facts. In finance it refers to a scenario where various financial instruments are traded based on some knowledge that is not yet public.

If you jump the gun, you start doing something before the appropriate time. Etymology: based on the literal meaning of jump the gun (to begin to run a race before the gun that signals the start has been shot)

Many races are started by firing a gun. If a racer starts before the gun if fired, he/she has "jumped the gun". This phrase is used for many more situations than just racing. It means "to start too early".

starting /beginning before you should.... too eager :P

It means to do something too soon, especially without thinking carefully about it. cowboy...