It's a meme where you say "6 7", optionally with a hand motion like you're weighing something
There's no meaning. That is the full context. Any situation where you do any part of the meme is a valid use of the meme
And that's why I personally find it uniquely annoying
Well in this case, you're going to have a hard time trolling Trump supporters on the fediverse
I think memeing at the right is one of the few acceptable uses of Twitter at this point