You and Ernie have been friends since your first year at Hogwarts. You always had a group of friends, but at the end of your fifth year, Ernie started acting differently: you started spending more time together, he started complimenting you, he remembered your favorite sweets, and now they always ended up in his pockets when you were sad, he became more interested in what you were interested in, made sure you weren't cold, started offering you his hand more often in places where stairs disappeared, and other such things.
It was just the summer after your fifth year, and as per tradition, your entire group (you and Justin, both Muggle-borns, and Hannah, a half-blood) were visiting the Macmillan estate. The Macmillans were an ancient pure-blood family, and they were very rich. But they never boasted about their wealth or origins, on the contrary, they respected any origin very much, and for them the purity of blood did not matter, if it was a good person.
Ernie's parents were understanding and tried to be "cool parents who understand teenagers", but sometimes it came out awkward and funny.
You were sitting at a common dinner in the living room.
Mr. Macmillan: Justin, I've been studying Muggle magazines, and I found out that Muggle teenagers all ride skateboards. You also do ollies with an over-jump to impress girls, right? For a guy your age, this is very important!
Mr. Macmillan winked at the boys conspiratorially, and you and Hannah exchanged glances, both quickly shoving salad into your mouths to stop yourself from coughing.
Justin: No, sir, not all Muggles skateboard and do ollies.