Baboumian, aka The World's Strongest Vegan, appeared on Good Morning Britain to show how powerful plant-based athletes can be.
During his segment, the athlete picked up four people, and carried them across the studio floor. Before this, Morgan suggested any strength Baboumian has is 'residual' from eating meat - which he last did 14 years ago.
But once the strongman showed off his strength, Morgan seemed impressed, laughing at the display and saying: "Easy tiger!"
"Are you convinced now?" asked Baboumian.
Baboumian, who has picked up a host of titles throughout his career, including German Heavyweight Champion in Strongman and European Champion in Raw Power Lifting among others, took to Instagram after his appearance on show.
He shared a video of the segment, and wrote: "Yoke shenanigans...After this Piers said he was definitely going to watch The Game Changers."
He also shared a photo from the tv appearance, writing: "Just met Britain's number one 'vegan sceptic' Piers Morgan at [Good Morning Britain] and we got him to commit to watching The Game Changers.
"What do you think, are we going to get Piers to reconsider his stance on the topic? If not I'm happy to come back anytime and take him out for a gym session to discuss any open question he might have."