Yes. 'Tis true. A good squeeze session (self-administered, or assisted) on a regular basis can potentially prevent breast cancer.
And neither this thread, nor the below link, are in any way safe for work.
Squeezing breasts could prevent cancer, best study ever says
MSN -- Tuesday, December 18, 2012
... New research has shown that squeezing breasts could prevent malignant breast cells from causing cancer. This doesn’t give pervy dudes license to grope you on the subway, ladies, but it does mean boob-grabbing should be a regular part of your self-care routine (yes, absolutely try it DIY-style)....