[temetnosce]

There's a certain dance of courtesy when it comes to eating with a lazy susan that you eventually learn. Children were taught to yield the lazy susan to their elders first, otherwise they would be scolded by their guardian. This means hands off of the fun spinning table for kids. This is unless the guardian knows that the child (more so toddler/baby) is too young to understand table manners, and would otherwise cry from hunger. But in that case, it's the adult guardian that's spinning the table. And then there's the whole thing with who gets the last piece. Lots of small intricacies when it comes with family style meals, and spinning the table just makes it a little bit more interesting.

You don't know table manners/societal norms innately; it's a learned thing.