As a child, my favourite sandwich was cheese, mayonnaise and beetroot... I had no idea this was considered a strange combination, until I was sent to school with it and everyone stared at my sandwich and asked why I had jam with my cheese!
I guess it’s a Dutch thing? (My mum was born in Holland.)
At home we had wooden napkin rings as my mum didn’t use kitchen roll. She used to make napkins out of old cloth and we each had a napkin ring assigned to us. She was always the aubergine, my dad was the pineapple, I was the watermelon and my brother was the grapes. I thought everybody had fruit/ vegetable napkin rings.
Both my parents worked and we couldn’t afford a nanny so me and my brother grew up with au pairs... the au pair was always allocated the apple napkin ring and then there was a spare one (a pear). I could never understand why the au pair didn’t get the pear ring...
The au pairs (there were at least 21) all had different rules and ways of doing things. One used to eat her spaghetti with melted chocolate, another only ate raw fish and raw vegetables for dinner, another made us cups of tea for dinner (because my mum had referred to it as ‘tea time’), another ate sandwiches of cheese, strawberry jam and slices of boiled egg. Another used to shout at us if she heard our forks touch our teeth when we were eating dinner, whilst another used to make pizza with broccoli and carrots as toppings. Another used to make us eat with newspaper tucked under our arms (to keep our elbows in)- a bit odd because it was only ever me and my brother, sitting opposite each other. Another used to wake us up in the middle of the night to feed us midnight feasts, even when we pleaded with him not to, as we had already brushed our teeth and were tired. Another hit us because we got out of bed, my brother was still in nappies, and it only occurred to me how wrong this was when I recalled it years later as an adult. One used to have all the neighbours round after school to teach them how to bake a perfect apple strudel from scratch. One day I’ll write a book all of them 
It wasn’t until I was well into my adult years that I found out nobody else owned a fly a squat.... HA! They all owned fly swats. And they didn’t squat flies, they swatted them...