It takes a lot of practice, but i enjoy being fat in public. I'll happily lean back and let my gut hang out in a restaurant or food court, at this point I'll even rest my hands there or give myself a little pat or squeeze!
I HIGHLY advise you to go to Walmart if you need some practice just letting your belly and/or curves be fat in public. I found a really high proportion of overweight customers at my local Walmart.
Truth.
I've shopped in many Walmart locations from the PNW to So Cal, the Midwest to Appalachia, and up and down the East coast over the last 30 years or so.
Compared to other well known "big box" stores, Walmart seems to have the highest proportion of obese customers hands down.