Atletico Madrid fans gave Cristiano Ronaldo all sorts of stick as they beat Juventus 2-0 in the first leg of their Champions League last-16 clash - and the forward couldn't help but respond to their taunts.
Ronaldo, 34, has netted 21 times in all competitions since joining Juve in the summer, but has only managed one goal in Europe since his €100million move from Real Madrid and was chomping at the bit ahead of Wednesday night's clash.
While Ronaldo showed glimpses of magic in the first half - coming closest with a thumping long-range free-kick which was saved by Jan Oblak - Diego Godin and Jose Gimenez kept the Portuguese quiet for the most part.
Godin and Gimenez would both go on to score during a frantic five-minute period in he second half to give Atletico a two-goal advantage ahead of the second leg in Turin.
Atletico's supporters at the Wanda Metropolitano Stadium, sensing Ronaldo's frustrations, began booing and jeering the striker every time he got near the ball.
Ronaldo, who of course played for the enemy during his nine-year spell at the Bernabeu, responded with a hand gesture towards the stands, reminding Atleti's home support of how many Champions League titles he's won down the years.
The forward lifted the trophy on four occasions with Real Madrid and once with Manchester United.
Former Italy defender Marco Materazzi believes the pressure is on Juventus to win the Champions League after they signed Ronaldo.
'Juve is strong every year and have an obsession with having to win the Champions League,' he told Eurosport Sweden.
'When you win a lot in Italy, you have to do one more step and the extra step is called the Champions League.
'And then this year they took a player [Ronaldo] who is unequalled at European level, so I think that Cup is their first goal.
'In Italy, nobody is able to remove the Scudetto from Juventus. But if they do not win the Champions League, I think they will be a failure."
'When you take the strongest in the world, along with Messi, it is right to expect that Cup. If they win, I will congratulate them, as an Italian. But do not ask me to cheer for them.'