I am not talking about alcohol or such that is only available to 18+, but stuff that only mum or dad ate or drink while the kids had something different.
Maybe it was a taste preference or maybe ones folks just didn't feel like wasting money on something the kids wouldn't appreciate, so they limited it to themselves and even today as an adult it still feels like weird ordering it because your great up with only mum or dad doing it.
For me:
Diet Coke - growing up, us kids had the full leaded version, while mum and dad did the unleaded one. These days I prefer Zero - and I wonder if subconsciously I don't care for Diet is based on something subconscious!
Mangos and avocados - these where definitely foods mum loved and she admitted later we as kids just didn't appreciate them enough to waste money letting us eat them. I do think this one was a fair call - and at least as an adult now I love them!
Viennetta Ice Cream - like above - us kids wouldn't apricate it - so they just gave us your basic Neapolitan ice-cream with whatever brand was on special. I'll be honest though, as an adult now having Vienetta - I think it is a bit overhyped! LOL