Jose Mourinho raged at reporters following Manchester United's latest Premier League defeat, demanding respect for his past achievements.
Tottenham Hotspur hadn't even scored in losing on their four previous trips to Old Trafford under Mauricio Pochettino, but a Harry Kane header and a Lucas Moura double inflicted a second defeat in the space of a week on United following a humiliating 3-2 reverse at Brighton & Hove Albion on Matchday 2.
The 3-0 scoreline at Old Trafford represented the heaviest home defeat of Mourinho's managerial career.
The manner of the defeat, coming so soon after the Brighton loss that prompted six changes to United's line-up, including the bizarre sight of midfielder Ander Herrera lining up on the right side of a back three, has piled even more pressure on the Portuguese manager as United now trail Spurs, Liverpool and Chelsea by six points and stand four adrift of champions Manchester City just three games into the new campaign.
Speculation as to Mourinho's future was already intense before Monday night's defeat following a 3-1 loss to Brighton as well as well-publicised clashes with the club's executive vice-chairman Ed Woodward over a lack of summer signings.
However, he railed against his critics by citing his record of winning the Premier League three times over two spells at Chelsea.
"I won more Premierships alone than the other 19 managers together. Three for me, two for them. Respect!" a fiery Mourinho told reporters on exiting his post-match press conference. The two managers Mourinho referred to are current City manager Pep Guardiola, who guided the club to the title last season, and Guardiola's predecessor, Manuel Pellegrini, who won the title in 2014 and is now manager of West Ham United.
Mourinho stood in front of Old Trafford's Stretford End at the end of the game to applaud the home fans, who didn't boo his side at full-time despite the result, although there were plenty of empty seats as supporters headed for the exit following Moura's six minutes from time.
"Today I had the proof the best judge are the supporters," Mourinho said.
The fans and Mourinho's response came after a dominant first 45 minutes from the hosts before Spurs took control with two goals in two minutes just after the break.
United, though, were left to rue a series of missed chances by Romelu Lukaku, particularly when the Belgian fired wide with an open goal on 15 minutes.
But it was an all together different story in the second half.
Pochettino's half-time words of wisdom made a huge difference as Spurs came out a different side after the break.
David de Gea had already denied Kane and Dele Alli had seen a goalbound effort deflected wide by the time Kane rose highest from Kieran Trippier's corner to loop a header into the net.
Hugo Lloris kept his place in the Spurs goal and retained the captain's armband despite being arrested for drink driving in the early hours of Friday.
And Pochettino's faith in his skipper was rewarded when Lloris denied Lukaku again with a brilliant save to keep Spurs in front.
A minute later, they doubled their advantage when Christian Eriksen's cross was swept home by Moura..
"It is a massive victory for us and I am very proud of the performance," Pochettino said. "It is difficult to beat Manchester United at Old Trafford. They were better in the first half but we dominated from then on."
It could have been even worse for the hosts but for some De Gea heroics and poor finishing from Kane. Victor Lindelof,a second-half substitute for the injured Phil Jones and one of those jettisoned by Mourinho from United's backline following the Brighton defeat, was handed a reprieve when the Spanish goalkeeper denied Alli after a short back pass by the Swede before Kane headed wide when unmarked from another corner.
Moura did rub salt into United wounds six minutes from time when he outpaced Lindelof before firing into the far corner.
Mourinho was goaded with chants of "you're getting sacked in the morning" by the travelling Tottenham fans.
Despite the mounting crisis at Old Trafford, it is unlikely United will part ways with Mourinho before Sunday's league match away to Burnley.
But with United already facing an uphill battle just to make the top four nevermind challenge for the title, time is running out for Mourinho to get the 20-time champions of England back on track.