The equipment used to perform mammograms. Some women have likened it to a tire running over their boobs, and having them squeezed into a box-shape thingy...
WOMAN: "It's that time of the year again... gotta go to the boob crusher..."
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi