How long did it take for R to take a blood pressure reading?

Choices:
A. an hour
B. several hours
C. not enough information
D. a few minutes
a few minutes
What are the worst examples of false advertising you've seen? Did you fall prey to their claims?
Rather that vouch for myself - my story is trite, and not particularly interesting - I'll relay the tale one of my nurses shared with me when I was laid up in the hospital for a few weeks. Call her R.
R was from an Eastern European country. We chit-chatted a lot, while she was taking my blood pressure readings and stuff. Lots of fun stories! But she relayed to me one of her first U.S. memories:
She wanted to lose weight. She was impressed by some things the U.S. had to offer - "you have actual nutritional information on everything!" - and thus figured everything she encountered was on the level. And she found a "miracle cure" company who was along those lines! "These are AWESOME miracle shoe inserts! Wear them, and the pounds will melt away!" She saved her pennies and dimes; she sprung for the inserts.
She received them... and they were shoe inserts; that much was true. But then there was their documentation: "using these insoles, combined with a 1200 calorie-per-day diet...." Like a 1200-calorie diet won't likely involve weight-loss, no matter what else you did, shoe inserts aside. The inserts did nothing, obviously. It was a sham.
At which point she knew she was snookered, but really had no recourse. She wasn't explicit about it, but I got the feeling that it was a leading factor towards her chosen profession. "I might not have been the most sage medical person ever, but I'm gonna rectify that, and if ever I hear someone falling for that sort of gambit again, I'll be there to nip those sentiments in the bud with my own anecdotes." Which is awesome.
I still feel for her. I wish I had contact information, so I could touch base, and express those thoughts personally. But that's the most personally resonant version of false advertising affecting someone that I've seen.