However, the 2-1 win came at a cost with Alexis Sanchez limping off before the late comeback at the Allianz Stadium.
"In attractive Italian they insulted me for 90 minutes", he told BT Sport. "I wouldn't do that gesture again but I don't think I offended anyone and at the time it seemed like the appropriate response to those who had insulted all my family, apart from my Inter one too".
Mourinho is unpopular among Juventus fans after managing bitter rival Inter Milan for three years. "It was just our present to them".
This was Juventus' first defeat in a Champions League group stage at home since 2009, United's finest result in Europe in the post-Ferguson era, though Ronaldo, a player from that time, claimed that "Manchester didn't do that much in my opinion".
After years in the doldrums Italian clubs other than Juventus are starting to make a mark on the competition and going toe-to-toe again with the world's best.
He said: "It made me feel at home as well, even if I play for Manchester United, they were very welcoming and I really appreciate that. We should have won the game easily, by three or four goals".
Supreme Court Justice Ginsburg hospitalized after fall
Prior to her appointment, Ms Ginsburg focused her work on women's rights and started the first law journal dedicated to the topic. Broken ribs typically heal on their own in six weeks to a month, and patients are advised to limit strenuous activity.
United's remaining fixtures are at home to Young Boys next and a trip to Valencia on matchday six. We're top of the group, so there's no need to set the alarm bells ringing. "It's OK to lose against United, but seeing how the match went it leaves us with a bit of a bitter taste".
"No, I leave the pitch immediately to avoid reacting, " he said.
"With a cool head I wouldn't have done it, but with my family insulted, including my Inter family, I reacted like this".
DF Victor Lindelof, 6 - courageous block from a Ronaldo shot early on but lost him when Leonardo Bonucci floated a ball over the top to allow the former United man to smash Juventus into the lead. They bought that player (Ronaldo), they want to win everything, they can win everything and we are a team where numerous players didn't play big matches like this in the Champions League.
Allegri raised his eyebrows and gave a smile of appreciation at the goal.