Ed Orgeron left little to the imagination at a wedding celebration over the weekend ... ripping his shirt off and dancing like crazy -- and thankfully, it's all on video!!
Coach O was back in Louisiana this weekend for a former LSU staffer's wedding ... and one of the guests captured the coach grabbing the mic and giving a passionate speech at the reception.
After his party pump-up, Coach O busted a couple of dance moves in front of a live band ... then outta nowhere, he started unbuttoning his shirt.