i find it so incredibly attractive when someone is really good at something, like you can play the violin? damn son. you’re a really talented dj? good for you! i don’t care if you talk to me about quantum physics for an hour straight if i can see the passion in you at some point in that hour i’ll think “whoa, this is really hot.”
A muggle-born’s sibling sends them a howler in the middle of the school year and it arrives while they eat. When they open it, all it does is simply scream “WHAT TEAM?”. Nearly all the muggle-borns shout “WILDCATS!” before returning to their meal, leaving the pure-bloods in total confusion of what the hell they just witnessed.
I accept and fully support this headcanon