Liverpool - An intense 3-3 draw at Anfield between Arsenal and Liverpool also featured a verbal exchange between Arsene Wenger and Liverpool boss Jurgen Klopp on the touchline, although both made light of the incident after the game.
"I told him to just calm down or I will send you to stands," joked Wenger.
"I don't know really why. At Liverpool it is very tight, you are very close to each other.
"He had a little problem with the fourth official, he can explain better than I. It was all right. There was no bad feeling."
Klopp has made a habit of asserting his larger than life personality on proceedings in the Premier League and was recently involved in a war of words with Sunderland manager Sam Allardyce.
"I told Arsene why I was a little bit emotional," said Klopp. "Like we say in Germany, I was on the tree. It was a clear throw-in for us in a good moment, a good phase.
"The fourth official, I asked what he was doing. I said what I said, he said what he said. We had nothing, but I had nothing with Sam Allardyce. I had nothing with Arsene Wenger.
"I said what I said, obviously it was too much and he told the ref and after five minutes he came and spoke."
The German was far happier and more forthcoming when discussing the form of Brazilian Firmino, however, after he scored his first home goals for the club.
"I could talk about this for half an hour," he said. "He doesn't know how good he is. If you are good, you have to show it.
"All of them were really good, perfect goals, the first goal was really good, the second spectacular, brilliant. He had a really good game, but he was not the only one."