It's called: post-BIG lunch shot. My stomach has the ability to expand phenomenally in the wake of a gigantic, albeit satisfying meal.
As for crossing arms and popping buttons, thank you for your concern but there's never been a problem.
Let me try again right now...
(Crosses arms and looks out for killer flying button)
No problem at all.
Well said, and good on you for being brave enough to post pictures here. Suit looks nice....counting the weeks.