I think it is derived from having greater life experience to some degree. TV adverts are a good example. I can see you’re hoodwinking the gullible and naive into buying your tat. I’m looking at you DFS. ‘Now only 599′ they say. It was never worth that before the f**ing sale, never mind now. And 599 what? 599 bananas, 599 unicorn tears?…and don’t get me started on politics’ adoption of similar tactics.
Mind you, it’s a fine line between calling out the charlatans that some people are and being a narrow minded old giffer. Best to just go out and ride.