Okay, so, in my case, I had an upcoming deadline for a client that I knew I was going to be able to meet. I verbally communicated this fact to my manager, and he agreed to speak to the client about the deadline. He forgot the conversation and was upset that my part of the project wasn't done on time. I kindly reminded him of our verbal agreement, connected with the client, and took responsibility for the late work. Sorry. The client took the responsibility for the late work, offering them an additional follow-up after the project was done to make up for the missed deadline. I also suggested to my manager that I would be better after formalizing my plans in writing in the future. After a stressful week, the client was happy, and my manager and I had a better understanding of how we should communicate in the future. Yeah, that's what happened.