The supremely talented midfielder was caught on camera embarrassing teammates Alex Song and Angelo Ogbonna at the Hammers' Chadwell Heath training ground ahead of this Sunday's big FA Cup quarter-final clash against Manchester United at Old Trafford.
The skilful Argentinian first pulls off a genius nutmeg on a sliding Song before beating another player and then exchanging passes with captain Mark Noble before nutmegging Italian international Ogbonna.
Noble then passes it back to Lanzini and despite slipping the player nicknamed 'the Jewel' still gets the all-important touch to find a teammate and keep the brilliant passing move alive.
With Song still on his knees in embarrassment, Ogbonna takes matters into his own hands and playfully wrestles with Lanzini for showing them up.
'Sorry for this'
Lanzini took to his Instagram account to post out the video with an apology to his teammates, saying: "Sorry for this hahahaha."
The video was also re-posted by Hammers hero Dimitri Payet with the message "I love you Manuel Lanzini."
Lanzini has been a huge hit with Hammers fans since signing on loan from UAE side Al Jazira last summer.
He has spent the best part of three months out through injury but his return to the first team has coincided with Slaven Bilic's side winning four games in a row against Blackburn Rovers, Sunderland, Tottenham Hotspur and Everton.