It's a winning combination, one as tried and true as Einstein's Theory of Relativity: Big boobs = fun. Especially when the massive rib cushions in question are attached to a hot young woman, a fact the director Powers seems to be somewhat aware of.
Unfortunately, not all of the talent in question here qualify as hot, but let's concentrate on the ones that don't look like Dairy Queen employees in Wisconsin. Kylie G. Worthy and Ava Ramone are the two sweetest in the boob batch; they go to town on weiner with all the requisite positions, though the scene is poorly lighted. Gianna is a worthy sleaze maven, and has a steamy round that starts in, guess what? A cage. Never seen that before.
Retailing: Push to big tit fans.