Eating carrots will give you night vision, if you crack your knuckles you'll get arthritis, eating a pip means that a tree grows in your stomach. Do any of these ring a bell?
They were lies we were told as kids - we soon grew up and realised they were a load of bullshit.
But it seems some people are just reverting right back to their youth because they were buying hot dog water for £30 and actually believed that it had health benefits. Wow.
Credit: Hotdog Water
We've heard some shit it our time and, by gum, this is up there with some of the most ridiculous. Just because something is packed with nutrients and goodness - doesn't actually mean it is. Honestly.
And that's the point an artist from Canada was attempting to make at a street festival in Vancouver.
Hot Dog Water CEO, Douglas Bevans, set up a booth at the Car-Free Day Festival and started selling bottles of unfiltered hot dog water for $38 (just under £30).
The Mirror reported that the unusual beverage had a great selling point, as Douglas claimed it would help people to lose weight, make you look younger, increase brain function and improve vitality. Can we buy it in bulk.
The water was created as part of a stunt to highlight how easy it is to be lead astray by misleading health marketing.
Speaking to Global News, Douglas said: "The protein of the Hot Dog Water helps your body uptake the water content, and the sodium and all the things you'd need post-workout.
"We've created a recipe, having a lot of people put a lot of effort into research and a lot of people with backgrounds in science creating the best version of Hot Dog Water that we could."
Oh he's good. Even had us believing it for a second.
A flyer advertising the water contained testimonials from 'professionals' including one by a Dr Cynthia Dringus, a Nobel Prize-winning nutritionist, who said: "Hot Dog Water is the NEW coconut water!" Yeah, whatever Cynth.
The fine print on the flyer exposed the stunt, saying: "Hot Dog Water in its absurdity hopes to encourage critical thinking related to product marketing and the significant role it can play in our purchasing choices."
According to Douglas, there were some people who figured out that it was all fake, but others didn't have a clue.
He said: "They've been drinking it for hours, we have gone through about 60 litres of real hot dog water."
The stall also sold hot dog lip balm, breath spray and body fragrance. Oh, ffs.
Around $1,200 (£904) was spent on the stunt, on items such as labels and bottles. He was really serious about proving his point to people then.
Take note people, stop being so gullible.
Featured Image Credit: Flickr/Håkan Dahlström