Looking at that score, you can be excused for rubbing your eyes a few times, or for getting the impression that it's just a fever dream, but the reality is that your eyes do not deceive you.
Brentford have not only just beaten Manchester United for the first time since February 1938, but they have done it emphatically - scoring four within the space of 35 first-half minutes and going on to keep their first clean sheet against the Red Devils since 1947.
David de Gea had a big role in the defeat, fumbling a tame Josh Dasilva strike from distance into his own net before Mathias Jensen capitalised on the Spaniard's lack of ability on the ball to apply pressure and dispossess Christian Eriksen before sending de Gea the wrong way in the 18th minute.
Ben Mee made it three on the half-hour mark, with his first goal for the club before a blistering counter-attack ended with Bryan Mbeumo sending his strike into the bottom corner to complete the scoring.
Here are the key takeaways from Brentford's historic victory.
Brentford are so much more than what people think without Eriksen
A big misconception surrounding Brentford heading into the new season was regarding the quality of the squad in Christian Eriksen's absence.
Those that watched Brentford frequently before the Dane's arrival in January will know that the Bees were competent in the Premier League. Still, the consensus amongst a lot of neutrals is that the sole reason the club avoided relegation was because of Eriksen.
While there was a correlation in the upturn of results post-February, this result proved that this is not the case.
With a team largely consisting of the same players that were involved in that run-in, bar the injured Kristoffer Ajer and Ethan Pinnock, alongside the arrivals of Aaron Hickey and Ben Mee, Thomas Frank's showed what the team is truly capable of.
The team showed excellent cohesion and tactical understanding to embarrass the Red Devils in absurdly hot conditions in west London.
Brentford left nothing on the field as everyone pulled their weight - even the substitutes. The Bees outran the opposition and became the first team to score four in one half against United in the Premier League era.
While Eriksen was seen as a huge loss at the time of his departure, the way Mathias Jensen and Josh Dasilva have started the season, in addition to the signing of Mikkel Damsgaard from Sampdoria, shows that Thomas Frank's side can be a real asset to the league.
Mathias Jensen can offer a lot to Brentford this season
Brentford fans' main frustration with Mathias Jensen is how inconsistent he has been over the past few years.
A player with excellent technical qualities - since the Bees' promotion to the Premier League, he hasn't been the asset people had hoped for. He would have the odd standout performance last season but lacked consistency, contributing one assist in 31 appearances.
However, in a game where the limelight was on another Dane, he put in his best performance in a Brentford shirt.
His job was to limit Eriksen's influence and his compatriots' ability to evade a high-press with a first-time, blind-sided pass - something that Brentford benefitted greatly from last season.
Three of the four goals scored came from Jensen's defensive work.
The first came when he implemented the press on Eriksen from a goal kick and conceded a throw-in deep inside their area. From that, he dispossessed Ronaldo and set up Dasilva on the edge of the box.
His goal came all from his own work. United attempted to play out from a goal kick again. With de Gea passing to Eriksen under the press of Ivan Toney and Bryan Mbeumo, Jensen timed the press to perfection, nipping the ball before composing himself and sending the goalkeeper the wrong way.
And for the fourth goal, it was Jensen that regained possession in Brentford's area before launching a long ball for Toney to run onto and set up Mbeumo.
If Jensen can consistently produce performances on par with this, then he'll prove to be a valuable asset in Brentford's attempt to retain their Premier League status.
The De Gea dilemma
The arrival of Erik ten Hag in Manchester has seen a shift in play style, with there now being a greater emphasis on building play from the goalkeeper.
While an elite-tier shot-stopper on his day - emphasising 'on his day' after his howler for Brentford's first goal - De Gea is far from competent with his feet, and there have been signs that this sort of performance would happen for a while.
Last season, he was dropped from Luis Enrique's Spain squad due to his lack of ball-playing ability and was replaced by his opposite number David Raya. There are numerous clips of the 31-year-old being unsure in possession and comically kicking it out of play.
Frank's side was able to capitalise on this and get into threatening positions by allowing the goalkeeper possession and closing the passing lanes.
Instead of clipping it to the full-backs in a less dangerous area or playing it safe and going long, De Gea would opt for a short pass to an under-pressure Eriksen. As a result, the passage would end before it could gain momentum.
In the second half, United played out of the back less often, and it proved to be more successful for them as the team created more. But not having a goalkeeper than can play out will be a huge concern for the head coach.
Ten Hag is left with the predicament of whether he persists with the Spaniard and continues with his philosophy or completely alters his tactics to cater for the goalkeeper.
Lisandro Martinez is not suited to a back four
Lisandro Martinez is a name that has been frequently mentioned since the centre-back arrived from Ajax this summer - most notably due to his height or lack of it.
Standing at 5 foot, 9 inches, Martinez is by far the smallest centre-back in the league and is being targeted by the opposition because of it.
Part of Brentford's game plan was to target the Argentina international with direct balls into his area for Toney and Mbeumo to latch on to.
At the start of the game, Martinez was dealing with Toney well by using his body to nudge the centre-forward off the ball. However, as the half went on, Mbeumo and Toney asserted their dominance. And it became problematic for United.
It can be argued that his height was a factor in Brentford's third goal. As Toney nodded Mbeumo's corner back across the area, Martinez was at the back post and was beaten in the air by an unbalanced Mee. A taller defender would have perhaps dealt with it.
After a difficult first half, the 24-year-old was hauled off at half-time.
There is no point discrediting a player's ability after just two matches, but he will struggle in this league if he is utilised in a back four. Being the left-sided centre-back in a back three may be the solution.