Ok ... dumb question here, and I know I'm crashing the party ...

I've opened these "Thursday" threads once in a while, and I hate to sound like an ignoramous ... but what exactly ARE these?

Is there some hidden meaning? A conspiracy to take over the world, spoken in code, of course?

Or just one of those, "You had to be here from the beginning" kind of things?

Just curious. Please don't break my kneecaps for entering the sacred clubhouse without knowing the secret password.