Fat white woman or a group of fat women. Also known as a pool of fat white women. Beluga whales always roll in groups.
Billy: Damn, look at all them fat white girls.
Steve: Shit, those is some Beluga Whales. AKA B-Dubs.
Billy: Well them B-Dubs is lookin' at me like they wanna eat me.
Steve: They must be hungry.
The pelvic area of a woman between her stomach and vagina. When there's a huge hump it sticks out like a softball in her pants.
Wow look how big that lady's softball is!