After noting that he could talk about any of his exes, Cohen added that any discussion of Mayer’s body might do the trick.
"I have three nipples. This is a Current Mood first,” Mayer revealed.
"No, this is a world exclusive!” Cohen quipped.
The “New Light” singer then lifted up his shirt to show off what he called a "supernumerary nipple,” located just below his right nipple.
"It kind of is,” Cohen said, touching the “third nipple.”
"You’re the worst doctor ever!” Mayer told Cohen. "I showed you something with a medical name and you kept going, ‘It might be!’”
"I’m no doctor, obviously, but is it a mole of some sort?” Cohen asked, prompting Mayer to quickly shut him down.
The Bravo host then got into interview mode, jokingly asking, "Do you feel marginalized as someone with a third nipple? I feel like that would be hard sometimes."
"I’m kind of doing alright, but some people are,” Mayer replied. "I’m a lucky one. I’m a well to do three nipper."
"Is your third nipple sensitive?” Cohen pressed.
"No, but my first and second aren’t either,” Mayer noted.
Mayer announced a new 2019 World Tour on Monday, with a North American leg kicking off on July 19. Cohen is currently in Los Angeles awaiting the birth of his first child. Fore more, watch the clip below: