Barcelona defender Gerard Pique was quick to give a reaction on Twitter after replays showed that Cristiano Ronaldo's second goal against Bayern Munich was indeed offside and Real Madrid skipper Sergio Ramos wasted no time in responding to the cryptic tweet.
Bayern Munich gave everything to force the tie into extra-time but the Portuguese's left-footed finish past Manuel Neuer handed Los Blancos the advantage.
With it clear that the goal shouldn't have stood, the former Manchester United defender left nobody in any doubt of his feelings with a rather cryptic three character tweet.
Reacting to Pique's tweet, Ramos hit back at his fellow countryman after the game about decisions going Barca’s way in the past, referring to the Catalans being awarded a soft penalty at a crucial time in the last round against Paris Saint-Germain.
The tweets by Pique meaning was unclear, but it looked like a swipe at Ronaldo’s first goal of the game being allowed to stand.
Ramos told Marca: "He should rewind and look back to the PSG game and see if he thinks the same about the referees.
"Let’s wait and see what happens with Juventus in the second leg.”
Juventus on Wednesday in their Champions League quarter-final looking to overturn a 3-0 deficit from the first leg in Turin.