a tight belt - the new dieting tip?

I'm wearing a belt today which makes me feel quite fat, and implies to me that perhaps I shouldn't eat since then it becomes too tight…. Not very comfortable but perhaps something I should wear all the time… no wonder why women were thin in the years of corset wearing - who could eat anything more than a bird portion with that kind of thing choking you? But then again they also had a tendency to faint quite often….