I inflate with the an aquarium pump, the air slowly fills my stomach until the pump tube starts popping out of my ass! I put the tube back in to pump some more air, but it kept popping out so I had to hold it with my hand to fill up with air to the maximum. After my stomach was filled with air so that I was bursting from the inside, I stuck out the tube and showed my belly inflated to the limit from different angles. Then I showed deflation - my ass close-up, loud and long farts.