Okay so person is getting inflated to an extremely large size with helium in a tight space. As they do though, their tail and a condom they have on also begin to inflate to the same huge size. They get inflated so big they’re not only being squeezed by the walls but by their massive balloon condom and massive balloon tail effectively sandwiching them between two rapidly inflating bombs on either side of their massive body until all three kettle from pressure and eventually pop from how tight the squeeze is