Fans spot Oscar Piastri's hilarious reaction to Lando Norris joke in Chinese GP cooldown room

Eagle-eyed fans spotted how Oscar Piastri reacted to a joke from team-mate Lando Norris after winning the Chinese Grand Prix.

The McLaren driver led the entire race from pole position in Shanghai, picking up his first win of the season.

The Australian became the only driver to finish on the podium in both the sprint race and the Grand Prix itself over the weekend, with a second place to his name on Saturday.

Piastri was being caught by team-mate Norris in the closing stages of the Grand Prix, with the gap under three seconds entering into the final 10 laps.

But Norris suffered brake pressure issues that forced him to back off, ending any chance of a victory and almost causing him to lose second place to George Russell, who finished in third.

After the race in the podium cooldown room, Norris made a very Australian reference, initially telling Piastri and Russell: "I don't have anything to put in the helmet stand."

Russell replied: "Your cap?"

Piastri said: "I can throw the bottle."

But Norris said: "Throw the cap... multi 21, Seb!"

While Russell laughed at the joke, it appeared to fall flat on Piastri, who stared straight ahead of him with both arms over his ahead.

The 'Multi 21' remark was made by former Red Bull driver Mark Webber after he was overtaken by team-mate Sebastian Vettel - against team orders - for the race victory during the 2013 Malaysian Grand Prix.

The specific order to hold position was known as 'Multi 21', with Vettel's race engineer Guillaume Roquelin, and even team principal Christian Horner, telling him not to fight Webber and stay in position for the one-two finish.

Webber would tell Vettel in the cooldown room after the race: "Multi 21, Seb. Yeah. Multi 21."

Not lost on Norris will have been the irony of the joke - as Webber is now Piastri's manager after retiring from Formula 1.

Reacting to the clip, one fan wrote: "Knowing that Webber is his manager makes it more funny."

"He did not just call Mark Webber's client Multi 21 Seb," another joked.

And a third said: "Tears Oscar didn't get it."

Speaking on the incident in an interview with Autosport last year, Webber said: "There's a lot of history there.

"In Brazil 2012, when Seb was going for the championship, off the line he was disappointed that I didn't give him more room, and he got compromised out of turn one. I believe that was still on his mind.

"We were under a lot of pressure that weekend, the Mercedes were fast ... I took my second stop and he was right there.

"Then the call came, 'The race is off. It's all good. We've beaten the Mercedes, they're done. Now it's you two, it's eight laps to go, let's just bring it home'.

"Then a lap later it's [Webber thinking], 'Hang on, I've turned everything down here. And he's coming at me like a train'."