One of the aspects of the bariatric surgery is that the passage for food is very small-- about the size of a dime-- and that if you eat something that is larger than that, it gets stuck. When your body tries to free it, it causes vomiting. And it's pretty painful and uncomfortable, like really bad heartburn.
I tried eating some chicken breast chunks that I had cooked last night. I thought I had cut the chunks small enough and chewed them thoroughly enough, but no such luck. It's a painful lesson, but absolutely expected as a part of the reprogramming. They tell you "it will happen", and the lesson that you learn from it.
It's just damn uncomfortable when you have to sit through a meeting where you're constantly feeling like you're gonna throw up.