Vomiting is compulsive eating and vomiting.
It is a disorder which can be based on anorexia or bulimia. The fact of vomiting can seem a solution of the patient who does not want to put on weight. This disorder gradually becomes a compulsive pleasure. The affected person ends up vomiting for pleasure, very loudly. She organizes the times when she overeats so that she can then vomit. This scheme constitutes the person's pleasure. This disorder has been around for a long time.
Epicurus ate and vomited for the simple pleasure of doing so "the principle is the root of all good and the pleasure of the belly". The psycho trap is the vomit: the secret lover. A demon from which the person cannot free themselves. It's a moment of pleasure at the same time as a torture