Let's see How far back we can find a posting from a message board.

I found one from 1999.
https://groups.google.com/forum/m/#!topic/alt.comedy.laurel-hardy/4emueBoJ8Tk

Anyone else want to try and find an even earlier/older posting?

I didn't even have to click on the link to realize (by looking at it) that it was a newsgroup post, not a forum nor message board post.

Maybe you're young, not your fault. Newsgroups have been around since probably before you were born, and certainly before I was aware of the internet.

I can't show them to you now, but, I started my social media in the late 80's (and computing the mid-80s)