I drank a glass of wine with a late dinner and ten minutes later got a text reminding me it's my turn to be the DD for the weekend for a volunteer club we set up through TSTC. The club was my idea and I made a big speech about on your night not even taking a single sip of alcohol since others depended on us being 100% OK to drive. I had to fess up and get someone else to take over and I am humiliated. I am currently working on an apology letter to the club and figure it will be necessary to resign as head spokesperson and vote in someone else. I can't believe I did that. I can't imagine what the other volunteers are saying.
Edit: I forgot to mention this is the first night our club's services are available. The first night is a pretty important night.