'He's walking alone now': Viral Lionel Messi boast comes back to haunt Barcelona after Liverpool's unbelievable Champions League semi-final triumph

Liverpool's unbelievable come-from-behind win to defeat Barcelona in the Champions League semifinal has caused a storm of virality on the footballing Internet, but among all the discussion, deliberation, analysis and exultation, one particular piece of banter has come back to haunt the Catalan giants.

Before the second-leg at Anfield, Barcelona, who brought a 3-0 advantage with them from the Nou Camp a week earlier, had tweeted a photo of their superstar Lionel Messi, taking a crack at Liverpool's iconic 'You'll never walk alone' song and slogan.

We've found one person who does walk alone, Barcelona had said, tweeting a wink and a goat (greatest of all time in sporting parlance) as they engaged in pre-match showmanship. 

The tweet has completely backfired, however. Jurgen Klopp's side began their fightback in the early minutes, with Divock Origi putting them ahead and for the rest of the first half, Barcelona struggled uncharacteristically to get back in to it. It was in the second half though that Liverpool ran rampant. In a three-minute spell, Georginio Wijnaldum scored two back-to-back goals to bring the two sides level on aggregate. The away goals rule meant that if Barcelona scored one, Liverpool would then need two more, but instead, it was the home side that got the all-important deciding goal, with Origi once again getting on the scoresheet, leaving Barca just over 10 minutes to salvage progress. They failed, however.

In the second semifinal, Tottenham will travel to Amsterdam hoping to emulate Liverpool by coming from behind to beat Ajax. The London side are only one goal down, however.

The 2019 Champions League final will be played at Atletico Madrid's spanking new Wanda Metropolitani stadium on June 1.

Here are some reactions to Barcelona's ill-fated baiting of Liverpool: