Slimming On Tap?
 

It was claimed that the Romans would go behind a curtain to throw up so they could carry on eating, now we have the modern day fat bastar' 'erm I mean obese people able to do even better!

https://www.newscientist.com/article...ush-stomachtap

If it works there will be plenty of 'all you can eat' places going out of business.