Mark Zuckerberg is getting slammed after picking a side in the epic Philly cheesesteak battle

Facebook CEO Mark Zuckerberg sparked controversy during the most recent stop on his whirlwind tour of the US. 

On Sunday evening, Zuckerberg visited Pat's King of Steaks, a legendary Philadelphia restaurant known for its cheesesteaks. 

"Traveled all the way to Philadelphia for the best cheesesteak in the land," Zuckerberg said in a Facebook post.

Philly.com reported that the Facebook founder spent $66 on six sandwiches with Cheez Whiz and fried onions. According to the Pat's night manager, Zuckerberg used the correct term - "Whiz wit" - to order the Cheez Whiz-topped sandwiches. 

While Zuckerberg apparently didn't make any missteps while ordering, the question of who has the "best cheesesteak in the land" is a hotly debated one - especially in Philadelphia. 

The top comment on Zuckerberg's photo from Pat's reads: "oh man... people are going to blow up the comments on the best cheesesteak place." 

Some people saw the pick as a jab at nearby cheesesteak rival Geno's: 

Others demanded that Zuckerberg visit Jim's, another Philly cheesesteak spot that opened in 1939: 

And, some said that a true great Philly cheesesteak must be found elsewhere: 

Zuckerberg has been documenting his quest to visit all 50 states in the US this year on Facebook. While the Facebook founder has insisted that the aggressive community outreach isn't a political ploy, rampant speculation about the CEO's political aspirations has continued unabated.