The 30-year-old superstar was so incensed at being asked his opinion, he stormed out of the Spanish interview, blurting expletives at the crew on his way to the exit door.
Ronaldo's disdain is perhaps understandable, given he was publically ridiculed by departing FIFA president Sepp Blatter in October 2013.
Blatter issued a public apology afterwards, before Ronaldo took a puff of the peace pipe on the eve of the Ballon d'Or last year, confirming the air was clear between the two polarising figures.
Perhaps, though, the bad blood still lingers, if his reaction to CNN's line of questioning is anything to go by.
Maybe the journalist would have had better luck asking Ronaldo about his success with the ladies during Real Madrid's recent pre-season tour of Australia, then again, .
Reports emerged this week that a man who has no issue scoring on the field - having bagged 225 goals from 200 matches with Real Madrid - experienced considerable difficulty scoring off it Down Under.
In between lighting up the MCG during the International Champion's Cup, Ronaldo was messaging former Miss Latina Australia finalist Aline Lima on social messaging service WhatsApp.
Equal parts bemused and frustrated by her refusal to send him images of herself, the Portuguese reportedly wrote "seriously?" in one tetchy exchange, as the promotional model claimed her boyfriend wasn't keen on her having a dalliance with the footballer.
Lima initially approached Ronaldo via Instagram, to request a meeting between him and the boyfriend. The incredulous footballer said: ""Yes, beautiful. But it is difficult. I do not want to know (your) man. I want to meet you."
It's the latest off-field setback for Ronaldo, who was dumped last year by his model girlfriend Irena Shayk, amid cheating claims.
He allegedly kicked off his tour of Australia with a barrage of overtures on social media to homegrown actress Margot Robbie, before turning his attention to Lima.
