An X user shared pictures of Elon Musk and a person with a barrel chest, asking Musk's Grok if there's a reason for the trillionaire having a "barrel chest". "His body is totally normal, not a disease...The guy's busy launching rockets...not prepping for a bodybuilding competition," Grok replied. Another user jokingly made Grok turn Musk's image into a Cybertruck.