Tell 'em why you mad son! The video and Tweet that started it all.
Ok, so the reason Ray J is so twisted at Fabolous right now is because Fab was watching Floyd Mayweather's boxing special '24/7' and Tweeted about Ray J serenading Floyd Mayweather in his living room.
So, in case you missed what started this mess, here's the footage of Ray singing to Floyd and the offending tweets...