On a night where Germany's 2-0 victory over Ukraine should have taken centre stage, it was instead manager Joachim Low's sideline antics that stole the headlines.
The 56-year-old was seen on camera putting his hands down his trousers and sniffing his fingers afterwards, much to the disgust and shock of those watching the live broadcast.
He's been caught in the act on more than one occasion, though, after footage emerged of Low doing the very same during a Germany training session recently.
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It's a vile habit and one that he should perhaps refrain from doing in the public eye.
Three days on from Germany's win and Low has finally commented on the uproar surrounding his actions, insisting he did it subconsciously.
But first, here are the videos everyone is talking about.
He said, per BBC Sport: "It was adrenaline and concentration. I will try to behave differently in the future.
"I saw the pictures and obviously sometimes you do things subconsciously. It happened and I am sorry."
So according to Low, he 'subconsciously' put his hands down his trousers twice and smelled his fingers afterwards. Sure.
He at least has the backing of Germany winger Lukas Podolski, who gave a brilliant reply to questions about his manager's actions in a recent press conference.
The former Arsenal forward said: "It's not an issue. About 80 per-cent of you here have at some point scratched your balls.
"Therefore, everything is good."
Nevertheless, Germany made the perfect start to Euro 2016 on Sunday thanks to goals from Shkodran Mustafi and Bastian Schweinsteiger.
It was a particularly momentous occasion for the latter, who endured a frustrating and injury-plagued season last term.
It would appear Schweinsteiger is still a long way off full fitness, though, after the 31-year-old admitted he was knackered from celebrating his late strike.
"I ran so hard in the celebrations that I’m a bit out of breath still!" he said, according to Manchester United's official website.
"It was amazing for that to happen, it’s the kind of thing you can only wish for, but the most important thing is the team wins.
“It’s just incredible. After all the injuries… Something like this happens.
“I can’t play for 90 or 120 minutes yet but I’m feeling like I can play. I feel really good. I think, if I stay healthy, I’ll be able to play. I hope I can play some more."
Fellow goalscorer Mustafi revealed his delight at Schweinsteiger's dream return to action.
“I’m happy for him because it’s not easy to come back from injury with a lot of people criticising you," the centre-back began, "or saying you might not go to a tournament like this.
"It’s not easy but I’m happy for him.
“He comes in and demonstrates that he still has this mentality that he wants to fight and wants to give everything for the team and it’s important for young players like me to have someone like this in the team.”