"Chauner" refers to an obese person who lives on state benefits, as a result of being too fat to work. This is a derogatory term, and only refers to those who are obese out of choice (not those who are obese through a medical condition). This word comes from a family who live in Blackburn, England. The father of the family is quoted as saying "sometimes I get tired from watching TV so I have to have a little nap"
The majority of jeremy kyle's audience are most probably chauners.