Its a typical term of saying that someone has a lot of skin, full of mass. Its usually referred as " A lot of mass! "
The person who has the most "Ballamass" has 32 layers of skin. The most skin is on her cheeks, and then her arms! Her name is Ballamass, she changed after her brother learned she had a lot of mass...
This a very stereo-typical term when a person has "Ballamass."