How do you know when you've thrown a foul?

You know you've thrown a foul when the disc does not land within the designated playing area or when it violates the rules of the game, such as being thrown out of bounds or hitting an obstacle. In Ultimate Frisbee, for example, a foul can also occur if there is illegal contact between players. Players or referees may call a foul, and it’s essential to communicate clearly to resolve any disputes. Always be aware of the specific rules of the sport you're playing to avoid fouls.