It's rude to comment negatively on people's clothing.
Jim's friend got a new pair of jeans, and they ask Jim how they look in them.
Jim wants to tell his friend what he thinks of their jeans.
Jim says his friend's jeans look fine and adds that it's hard to go wrong with a pair of jeans.
Jim tells his friend that the jeans are really dorky and that they have terrible fashion sense.
Jim's friend stops worrying about how they look in the new jeans.
Jim's friend loses confidence in how they look in their new jeans.