Definition
When a golfer yells "Fore", watch out, because a golf ball is about to land near you. This is another golfer shouting at you from a distance, "Hey, I just hit a bad shot and it's coming right at you!" While yelling on the golf course might sound rude, it is a good thing to yell "Fore!" if you think your golf ball is at risk of hitting someone from another group. Golfers yell this all the time.
Usage
Fore!!!