Sunderland manager Paulo Di Canio blasted his side's dreadful performance in a behind-doors friendly with the 'kids", reports ESPN.
Di Canio organised the friendly with the Under-21s side in order to help with fitness levels and install some confidence back into the 19th placed side.
The plan backfired however, with the "men" losing 3-1 to the "kids" in what was only meant to be a practice match during the international break.
The controversial Italian was so incensed with the defeat, he ordered his players to never mention the game to anyone.
Di Canio's robust management style has already come in for some criticism this season. After the club's defeat to Crystal Palace last week, Di Canio publicly criticised club captain John O'Shea's performance.
"He rang me the next day and all is nice," O'Shea told reporters after the incident.
"Getting criticised is one of those things and that is his style of management. What he had to say to me is private but let me put it to you this way, it was him calling me."
"The criticism does not bother me in the slightest. It is water off a duck's back to someone like me. Because he is such a passionate man, everything he does is getting hyped up."
Sunderland are currently lying in 19th place in the Premier League and Di Canio will need to turn things around soon, or face the dreaded sack as Sunderland manager.
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