CBS
The UK presenter was trying to pull off a sketch with Sting and Shaggy on a New York subway as they tried to entertain the people on board during the Grammy Awards 2018.
But the good deed backfired as members of the public asked the trio to stop making so much noise.
As James, Shaggy and Sting sang The Police's Every Breath You Take, a New Yorker definitely wasn't impressed.
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39-year-old James tried to explain: "We’re doing like a carpool karaoke but like New York special edition."
The man hit back: "I don’t give a f***. Shut up."
The three men then burst into a medley of t It Wasn’t Me and Don’t Make Me Wait.
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The construction worker finally had enough as he said: "How about you shut up and sit down?"
He quickly added: "How about this, you get off the subway at the next stop or I take you off?"
Poor James was left blind sided as he was punched on the nose.
CBS
He was later seen with a tissue stuffed up his nose with Shaggy and Sting on either side of him.
Sting asked: "Whose stupid idea was this?" as Shaggy replied: "Wasn't me."
Fans had been left confused by James earlier in the night as they got him muddled up with Jim Gaffigan.
Full list of winners:
Album of the year
24K Magic – Bruno Mars - WINNER
Record of the year
24K Magic – Bruno Mars - WINNER
Song of the year
That’s What I Like – Bruno Mars - WINNER
Country album
Chris Stapleton - From a Room: Volume 1 - WINNER
Best comedy album
The Age Of Spin & Deep In The Heart Of Texas - Dave Chappelle - WINNER
Best rap album
Damn – Kendrick Lamar - WINNER
Best pop solo performance
Shape of You – Ed Sheeran - WINNER
Best new artist
Alessia Cara - WINNER
Best rap/sung performance
Loyalty. – Kendrick Lamar feat Rihanna - WINNER
Best dance recording
Tonite – LCD Soundsystem - WINNER
Best Dance/Electronic Album
3-D The Catalogue – Kraftwerk - WINNER
Best Rock Performance
You Want It Darker – Leonard Cohen - WINNER
Best Metal Performance
Sultan’s Curse – Mastodon - WINNER
Best rock song
Foo Fighters - Run – WINNER
Pop vocal album
÷ (Divide) – Ed Sheeran - WINNER
Pop duo/group performance
Feel It Still – Portugal The Man - WINNER
Best R&B performance
That’s What I Like – Bruno Mars - WINNER
Best R&B song
Bruno Mars – That’s What I Like - WINNER
Best rap performance
Kendrick Lamar – Humble - WINNER
Best R&B album
24K Magic – Bruno Mars - WINNER
Best country solo performance
Chris Stapleton – Either Way – WINNER
Best country song
Chris Stapleton – Broken Halos - Winner
Best urban contemporary album
the Weeknd – Starboy – WINNER
Best music video
Humble – Kendrick Lamar - WINNER