OK, an attempted Cliff's Notes.
Or actually more like Cliff's Notes OF the Cliff's Notes
since I didn't really read it, just sort of flashed through it.
In fact, let me try an imagined children's book version. Imagine each sentence on its own page, with some stupid illustration.
A guy bought a piano for $110.
He got congratulated for it.
His brother-in-law (wife's brother) broke his foot.
People asked if it happened while the guy was helping move the piano.
The OP's wife had some issue about the piano or something.
The brother-in-law came onto the thread too.
Both guys agreed that the wife had issues (you have to make air quotes with your hands while saying issues).
The original guy went for some piano lessons or something with a woman named Kathy.
For some reason (probably good ones) people started doubting the whole story.
The guys posted an X-ray of a broken foot.
Somehow it came out that the guys were black, which didn't matter except that the OP got his ass kicked a little for seeming not to like Mexicans.
The guys started fighting with each other about how much of a bitch or slut the wife was or wasn't.
The OP said he was leaving his wife and moving in with Kathy.
People kept doubting the whole story.
People thought the two guys were the same guy.
The vocabulary that was being used throughout was extremely colorful (no racial entendre intended, but air quotes needed around "colorful").
People kept expecting the thread to get closed but it didn't.
Then it did.