Unwritten for celebration or simply showing passion?
Jose Mourinho grabbed his arm and admonished Juventus fans after his Manchester United dramatic return to the Group of the Champions League in Turin on Wednesday.
Leonardo Bonucci approached Mourin to complain after the full-time whistle, and Paulo Dybala's striker also questioned him.
The United boss was then hustled down the tunnel by officials and his staff trainer.
Mourinho said afterwards that he "respected the Juventus" and reacted to the "insults" of the domestic fans.
"In the beautiful Italian city, they insulted me 90 minutes," BT Sportu Mourinho said, who succeeded Juventus rivals Inter between 2008 and 2010. "I did not offend them, I just did something.
"I know that millions of fans are happy with that, but I respect Juventus, your players, the manager, the quality you have."
The Juventus coach, Massimiliano Allegri, was not too hit and said "everyone has their own personal reactions".
"I can not say whether he is right or wrong," he added.
"You have to win with a little class"
There have been mixed feedback on BBC Radio 5 live and BT Sport.
Former Manchester United midfielder Paul Scholes said Mourinho could show "a little bit", while former United striker Dion Dublin said all the attention "turned to Mr. Mourinho."
Scholes talks about BT Sport: "This is everywhere you go, sometimes you have to win with some class, handle the manager. I do not think there is a need for it, but it is the way it is."
Dublin on Radio 5 lives: "There was no need for Jose Mourinho to be involved there. Everybody congratulated each other, and some went to congratulate Cristiano Ronaldo.
"Then, Mr. Mourinho addresses all the attention, having his right hand on his right ear as if to tell all the fans of Juve," What do you have to say about that? "
The Portuguese, however, received support from Owen Hargreaves. The former midfielder Manchester United said that it was a "big week" for the club, and the celebration was understandable.
Hargreaves at BT Sport: "It is not necessary, but that is a remarkable result and it is a great week for United and Mourinh."
Other examples of Jose's celebrations are controversial
This is not the first time Mourinh's celebrations have caused controversy.
He has been with the Juventus supporters in the Old Trafford for the past time when he has held three fingers at the treble he won while leading Inter in 2010.
He is also known to have started down the lies when his Porto side crashed United from the 2004 Champions League, sliding to his knees.
Mourinho has been given five European bans for his behavior after the semi-finals of the Champions League in Real Madrid against Barcelona in 2011.
And recently Mourinho was at the receiving end of some passionate celebration, as Chelsea's assistant coach, Marco Ianni, was fined 6,000 pounds for being mistreated by a US manager at the end of 2-2.
How did you react to social media?
Annette: Once again Mourinho proves that there is no end to the game because he has to do it!
Harrish Lacquer: Mou taking fans reminds me of Hitchens taking on the audience. Something nasty, but they dare.
Kashyap Savalia: I personally do not think it was a lack of class from Mourinho to celebrate so. All players are glorious all the time. Also, do you think the fans Juve sang beautiful things about him with regard to Inter's relationship? No way!
Chris AFC: A happy victory, and then Jose Mourinho entertains the local audience with a funny celebration. There is a reason why I rarely / never regret their death.
Official Mato: Celebration of Jose Mourinho is just invaluable.
Jim Camina-Carry: Jose Mourinho is wild. This celebration reminds me so much of Juve against Inter in his first years in Serie A.