It's rude to tell someone they're bad at something.
Jack and Tim are playing golf when Jack misses an easy putt.
Tim wants to respond to Jack's last golf stroke.
Tim tells Jack that we all miss sometimes and that he'll get the next one.
Tim tells Jack that he sucks at putting and that his grandma could have made that putt.
Jack's confidence is boosted, and he's happy to have a supportive friend.
Jack is embarrassed and has lost all the will to continue playing golf for the day.