When I had my assessment for the Eating Disorders Program, I was asked do you ‘chew and spit’ your food?”. I considered this an odd question, answered NO, yet after researching I came to realize that is a serious ‘eating behavior’.
On Scienceofeds.org they describe the behavior and provide comments to their article. A TV programme had an entire program dedicated to this eating behavior.
Chewing and spitting: an eating disorder of its own (Examiner.com)
The Silent Secret Eating Disorder – Chew and Spit (Anorexic to Athletic)