I used to belong to a sci-fi watching group, back in the days before streaming services in Australia, when most sci-fi shows were only available on 'pay TV' (I guess it's 'cable' in the US) or via download from the USA. Or at weird times on mainstream TV and then screwed with every time something with better advertising potential came on.

The number of times I casually mentioned something I'd heard from my fannish friends in the US and promptly had to weather a torrent of enthusiasm was legion.

And, of course, I've done it from the other side, too, where a friend mentioned something they knew I liked and I burst forth on a crusade of words...

Over time, some of us learn to temper our enthusiasm according to the audience. :)