Cristiano Ronaldo will never, ever forget his second debut for Manchester United.

In front of a full house at Old Trafford, the 36-year-old netted a brace in a 4-1 victory over Newcastle.

The Portuguese legend's return was just perfect and it's a day both United fans and the rest of the team will cherish forever.

As well as Ronaldo's brace, supporters inside the iconic stadium were treated to a stunning goal by Bruno Fernandes and a late strike by hometown hero, Jesse Lingard.

The latter's goal was his first in competitive action for United for quite some time and it was fitting that it came on the day of Ronaldo's comeback.

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Lingard and Ronaldo have a bit of history at United, despite the fact the Englishman's first-team debut for the club came way after the five-time Ballon d'Or winner joined Real Madrid in 2009.

Six years before that famous transfer, the leading scorer in men's international football met Lingard for the first time.

It was shortly after Ronaldo joined the Red Devils from Sporting Lisbon as an 18-year-old.

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At the time, Lingard was only 10 and a member of United's academy setup.

During the meeting between the pair, Ronaldo showed off some of his trademark skill moves and the footage looks even more surreal now after the game against Newcastle.

Take a look at the video here...

Video: Ronaldo & Lingard meet in 2003

Not only is the footage brilliant, it also highlights the absurd longevity of Ronaldo.

It's been over 18 years since the video above was shot and despite that enormous amount of time (from a footballing perspective), the Portugal international is still at the peak of his powers and one of the very best players on the planet.

Ridiculous, isn't it?

Lingard himself paid homage to his first meeting with Ronaldo on Twitter after beating Newcastle on Saturday.

Lingard's emotional tweet

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Wonderful scenes.