If I’m truly going to have a go at this no drinking thing, I’m going to have to come up with some good lies.
The real reason “oh I’ll feel terrible the next day” won’t pass muster, and I’d soon cave to people’s insistence that everyone feels like that, and that “just one drink” won’t do me any harm.
My go-to advice for people with embarrassing injuries is “a bear did it,” so I could say that a bear clawed at my gut, damaging my liver, but people would want to see the wicked scar.
Claiming conversion to Mormonism wouldn’t be believable. Maybe I could always say that I “had an important meeting the next morning,” which would get silly after the third time, but in a way I might like; that is, after I say it to the same person a few times, they’d be clued in on the fiction, and I’d take pleasure on using the excuse on days such as Christmas Eve, New Years, or really any weekend, where a meeting the next morning would be absurd.