Has there been a recent occasion in your "real" life (in other words, work or personal but not online life) where you wanted to tell someone off, but knew it would be better to keep your thoughts to yourself?

Has there been a recent situation in your “real” life, not online life, but for example, work or personal, where you really were itching to tell someone off because they pissed you off, but you knew it would be more beneficial for you to keep your thoughts to yourself?