You have a new job as a secretary at a company that is producing a secret formula, you dont know more about. One day you find a few pills in your room. Someone from your work, must have forgotten them. You see a warning that the pills are very swelling and bloating. You give them a try because you have a little fetish about big bellies. You take pills and feel the effect. Your belly is starting to swell up. Your clothes are getting tighter, and your feet swelling too! At first you are scared, but slowly you want more. You take more pills. Each pill makes your belly bigger and bigger. Your b...

You have a new job as a secretary at a company that is producing a secret formula, you dont know more about. One day you find a few pills in your room. Someone from your work, must have forgotten them. You see a warning that the pills are very swelling and bloating. You give them a try because you have a little fetish about big bellies. You take pills and feel the effect. Your belly is starting to swell up. Your clothes are getting tighter, and your feet swelling too! At first you are scared, but slowly you want more. You take more pills. Each pill makes your belly bigger and bigger. Your belly is so swollen that it seems it will pop the buttons of your shirt. Your belt reaches its limits. Finally, you present an enormous bloated and naked belly.
You stand up and see, that your shoes are too small. You take them off to present big swollen soles. Your feet are strong enough to hold your new weight. Now you pretend to hear a voice that tells you, that you are the test subject for the pills. The pills will blow you up like a human bomb. You are scared but can not stop eating more pills.
You sit on bed/coach to grow bigger! You show your spread legs with swollen soles, laying your big giant belly between your legs. You cannot stop expanding. You are addicted and want to reach your limits. Finally shot gets blurry, as you groan, and it cuts to you having exploded (implied).