What idiom best describes a person who yelled at his friend because they were talking too loudly?

The idiom "biting the hand that feeds you" could describe this situation, as it suggests a person is being ungrateful or counterproductive by reacting negatively towards someone who is close to them. In this case, the person yelling at their friend for talking too loudly may be overlooking the friendship's value and the supportive nature of their relationship. Another fitting idiom might be "throwing a wet blanket," indicating that the person is dampening the fun or enthusiasm of a social situation.