For the record, it is
*not* just porn that causes this "perception" or "idea"—the normal people of the culture play a large role in creating this "expectation", too.
Prime example: Among plastic surgeons, the U.S.A.–Canada border is jokingly referred to as
'The 2-Cup Line' because the
*average* enhancement mammoplasty sizes (voluntary, cosmetic, breast-enhancement surgeries) are a
full 2 cup-sizes larger in the U.S.A. than a few feet away in Canada.
These are real, everyday women getting those surgeries. (It's
just an international border. I highly doubt boob-jobs are politically territorial in nature!)
e-d