What’s something that feels very British, but you’ve never really questioned why we do it?

Posted by Senior-Huckleberry-1@reddit | AskUK | View on Reddit | 133 comments

I was sat having a cuppa earlier and realised I automatically offered one to someone who popped round — like it’s an unspoken national rule.
Got me thinking, what other weirdly British habits do we all just accept without ever wondering why we do them?
Like apologising when someone else bumps into us, queueing with militant precision, or saying “cheers” as a universal response for everything.
What’s your pick for the most oddly British behaviour that we just... do without question?