Kyogo Furuhashi and Liel Abada each scored a hat-trick as Celtic inflicted a demoralising 9-0 defeat on Dundee United at Tannadice.
The Bhoys last won by a nine-goal margin against Aberdeen in the 2010/11 campaign, with the crushing victory just two shy of the club-record 11-0 win, which was set all the way back in 1985.
Japan international Kyogo got the ball rolling after 15 minutes and added two more - including a 20-yard beauty - before the break, by which point Ange Postecoglou's men were 4-0 up as Jota also got in on the act.
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The lively Abada scored a treble of his own in just 27 second-half minutes, with one from defender Josip Juranovic sandwiched in between, before Carl Starfelt added the gloss to an exceptional attacking performance when he headed in a corner from David Turnbull.
Jack Ross' Dundee United - who lost 7-0 to AZ Alkmaar in Europa Conference League qualifying earlier this month - remain rock bottom of the Scottish Premiership with just a point to their name, having conceded 18 in just five league games.
Celtic, meanwhile, leapfrog Rangers back into top spot ahead of next week's Old Firm showdown.
How ruthless Celtic stormed to victory
Adrift at the bottom of the table with one point from four games, and unaware of what was about to come, Dundee United made a strong start at Tannadice - where Celtic secured a 10th title in 11 seasons after a 1-1 draw in May - with Joe Hart forced into a brilliant save inside two minutes.
The former England goalkeeper denied Glenn Middleton, but was caught in the head by Steven Fletcher's boot as the striker attempted to seize upon the loose ball, which drew blood and prompted a six-and-a-half-minute delay.
Celtic soon got into their stride, though, and took the lead at the end of a slick move. Abada hit a raking pass forward to Jota, and his square ball from the left was expertly controlled and finished by Kyogo - who became the first player since Odsonne Edouard in January and February 2021 to score in four games in succession.
Reo Hatate then had two shots blocked and one saved in a matter of seconds, before Carljohan Eriksson batted away Abada's shot as Celtic charged forward, looking to expose their hosts on the counter.
Though it was largely one-way traffic, there was no lack of effort from United and they were almost gifted a way back into the game when Scott McMann's pressing forced Starfelt to cheaply cede possession, with Middleton's shot whistling inches past the right-hand post.
But Celtic were in a familiarly ruthless mood. Kyogo doubled his tally with a beautiful, unstoppable strike from 20 yards and completed his hat-trick by pouncing on Abada's pass after a gorgeous ball over the top from Matt O'Riley. There was even time for Jota to get in on the act deep into first-half stoppage time, too.
There was to be no let up from the reigning champions. Five minutes after the restart, Abada fired in from close range after scintillating build-up play and five minutes later, Josip Juranovic pounced for a sixth after Matt O'Riley's free-kick was blocked.
By this point, the hosts were clearly demoralised. They shipped a seventh when the unmarked Abada converted Hatate's cross, before the 20-year-old Israel international expertly dinked the ball over Eriksson to complete his hat-trick.
Starfelt headed in a ninth, quickly prompting calls for a 10th for the first time in well over 100 years from the travelling support, but, with just one minute of injury time added, there was to be no further misery for the undoubtedly shell-shocked Tangerines.
Man of the match - Liel Abada
The 20-year-old impressed during his first season in Scotland and has already set about improving upon earlier performances, with four goals and an assist in five games this term.
He was excellent at Tannadice and started off a fruitful day with a stunning ball that was instrumental in Kyogo's first goal, before setting up Jota before the break and then adding three of his own, just for good measure.
Postecoglou: We did it our way
Celtic manager Ange Postecoglou: "The boys were great, they stayed really disciplined and focused. We knew Dundee United were going through a tough spell and for us it was important we set our stall out early and put them under pressure. It's about not rolling out there and trying to win a game of football, it's about playing a game our way and making sure irrespective of how the opposition are set up that we impose ourselves.
"Kyogo is such an important part of what we do. It's not just his goals, it's the way he harassed the opponents. He was the one that instigated a couple of counter-attacks that we scored from. All our strikers worked hard and got their reward.
"Liel is a fantastic young player and everything we've asked of him in the last 12-14 months he's just taken every challenge. He wants to learn and get better. This was a good game for him to come in as we knew he'd get plenty of the ball."
Ross: Humiliated and embarrassed
Dundee United manager Jack Ross: "Humiliating and embarrassing, that's the only way to describe it.
"You shouldn't lose a game by that many goals, you shouldn't lose a game in that manner of performance. Every ounce of criticism that falls on my shoulders is deserved because, from a personal pride perspective, it's really sore.
"In terms of that humiliation and embarrassment the players should feel that way, because that's the way I feel. I think if you have that desire to succeed in your career, when you have days like today it should hurt you immensely.
"Ultimately you have to own the responsibility for it and you have to own the solution as well because criticism will rain heavily upon you for it. It's only the players first and foremost that can control their own behaviours and actions, like myself, and you can only drag yourself out of that situation.
"As a manager you're continually looking to solve problems on a weekly basis, whether you're in good form or bad form.
"Every bit of work I'm doing at the moment is to solve the issues I'm seeing on the pitch and I've not found the solution yet. I won't stop searching for it as long as I've got the opportunity to do so, but I need to do it and I need to do it quickly. I need to find lots of them as there are a lot of problems to solve for us at the moment."
What's next?
The attention now turns to the League Cup for both.
Celtic begin their defence away to Ross County on Wednesday night, with United facing Livingston.
It is the first Old Firm clash of the season on September 3 as Postecoglou's side take on Rangers at Celtic Park, live on Sky Sports, kick-off 12:30pm.
Dundee United are away to Motherwell the same day.