I'm the original creator of the "Still waiting on OP" meme from The Shining and have a mildly interesting story behind its creation if anyone would care to hear.
In 2010 I was working at a video rental store (RIP) and got access to new movies before they were available to the public. Every day I'd grab one, and every night I'd stream them online for 4channers on /tv and /r9k. There was a chat built into the stream and we had a lot of fun for months and months, hanging out watching movies and chatting. It built a pretty big following. Think Twitch before Twitch existed.
One night there were no new movies so I grabbed The Shining. We watched through it, and when that scene came on the screen I paused it to take a closer look. We joked and carried on about it in chat, and I screenshotted it and opened Photoshop and made the meme then and there. Everyone loved it. Several folks posted it on 4chan boards and it took off in a big way. We finished the movie and had a great night.
Stream on angelthump, discord, those are just the ones I know of there's definitely more ways to do it out there. Source the media from the piracy megathread. You're on your own with the 'gathering a community' part though.
Having my own Jellyfin instance it's easy to drop a password and watch together. And at least in my country if this is some movie I bought and ripped it is also perfectly legal.
me and.my middle.aged friends just download the same file and click start on the count of three. then it's beers and banter on zoom while we grind through Highlander 2. or Sgt Peppers Lonely Hearts club Band. featuring the Bee Gees.