Mary sat pondering her next move, passing the time exploring her body with her thick hippo hooves. Out of boredom she began squeezing her belly, feeling her extremities swell even larger making Mary moan in delight.
Just then Mary heard a knock on the door. She recognized the voice outside as that of Phil, her friend. A wicked idea crossed her mind as Mary shifted herself to be sitting towards the door. Squeezing her belly and thighs simultateously, Mary spread her legs wide as her labia began to inflate, the two pink lips blowing up like balloons bigger than the entrance of the door. Holding her body in the same position, Mary grinned as she heard the door fly open followed by a muffled cry as Phil walked straight into her inflated vagina with a squeaky splat. Mary tensed as the man hit her sensitive pussy, causing it to tighten around Phil pulling him quickly into the hippo's cunny.
Relaxing her grip on her balloonie body, the hippo slowly returning to her normal bloated self, moaning deeply at every tiny move of the man trapped inside her. Using him like a dildo, Mary the hippo squirmed and pressed herself against the wall driving Phil deeper into her womb as her pussy lips contracted over and over, slurping up the last of his legs as Phil disappeared completely into the hippo, winding up inside her hollow belly surrounded on all sides by thick translucent rubber walls.
Mary pressed into her belly to feel the warm human inside her, stroking him gently. "I do hope you enjoy it in there Phil, because you feel far too good inside me to let you out any time soon..."