Lionel Messi and Barcelona won't be talking Liverpool lightly in the Champions League semi-finals should they polish Porto off on Wednesday night.
The Reds saw the size of the potential task in front of them as Barca battered Manchester United 4-0 over two legs.
The Argentine great says his team were "spectacular" after getting over an early wobble and they are now big favourites to win a sixth European crown - especially with Juventus and his big rival Ronaldo sent packing in Turin.
But Messi and co know they will be in for a game in the last four, whoever progresses in Portugal.
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"Taking off the first five minutes, where we were cold and a little nervous, I do not know if the result was weird and that made us come out that way," he said to Movistar.
"But then the goals came and we played spectacular football.
"The important thing is that we go to the semi-finals, but I'm happy for the win and for how we did it," he said. "We have the experience of Rome, which in five or ten minutes can complicate the classification or leave us out and we have to be aware of that.
"Liverpool or Porto will be very difficult, but beyond that we played a great game."
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Reds manager Jurgen Klopp has urged caution ahead of the second leg.
“If we were 2-0 down and going into the home leg, would we think we were out? No way. That’s exactly what Porto are thinking," he said.
This would have gone done well with Liverpool fans - Barca trolling big rivals Manchester United.
United fans have sung "Ole is at the Wheel" - their version of Waterfall by the Stone Roses - since Ole Gunnar Solskjaer replaced Jose Mourinho in December.
But after undone by the master Messi, the Spanish club's media team didn't pass up the opportunity.
Straight after the 3-0 victory which carries them through the semi-final, Barca posted an image of their two-goal talisman with the caption: “Messi at the wheel”.
Their Instagram post was liked over 600,000 times.
