Joe Wicks appeared to turn the air blue during one of his fitness class as he expressed his exhaustion over a very vigorous workout.
The Body Coach became short of breath after performing a move that saw him 'zooming' across the room multiple times and before launching into a press up.
Joe, 33, finished the sweaty routine doubled up in pain - and fans think he let out a rude word. Many took to social media to check if he had said: "That's f***ed with me, that has." The video has been watched over 340,000 times since it premiered live on YouTube on Monday.
After watching the clip again, some other viewers protested Joe's innocence and said he simply cried out: "That's buckled me, that has." While others joked they'd uttered far worse things
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