I walk on camera with a flat belly and start eating a very fatty, greasy McDs meal. I stuff my mouth with fries and a burger up close so my mouth is all you can see, and far enough away to see my whole face.
I chew loudly, and occasionally show the chewed food in my mouth.
After eating my filling meal, I stand up and show my chubby belly(I do not lift my shirt) I shake it, squeeze it, and lean over to show it hanging.