We could also classify fake ads using machine learning...

Red Bull doesn't actually give you wings. Ads are metaphors.

No, the Red Bull ad _uses_ a metaphor.

False advertising is claiming to be something you are not, raising false expectations.

You guys couldn't have picked a more perfect example: Red Bull settled a class action lawsuit for false advertising, not because of "gives you wings", but because their advertising falsely suggested scientific support for their product being better than caffiene-only products.

https://www.truthinadvertising.org/red-bull/