In Philadelphia, you don’t mess with people’s cheesesteaks.

Wisconsin Gov. Scott Walker (R) learned that the hard way on Tuesday while visiting two of the city’s popular cheesesteak spots, where he cut in line, left behind his trash, and ordered the famous Philly sandwich — with American cheese and without onions, according to philly.com.

The presidential candidate was also greeted by protestors during his visit to Pat’s King of Steaks and Geno’s Steakson. They held signs that included messages such as, “Scott Walker smells his own poop.”

Philly protesters bring, uh, colorful complaints about Scott Walker. pic.twitter.com/VqK6nygMwt — Jenna Johnson (@wpjenna) July 28, 2015

His choice of sandwich, featuring American cheese, not Cheez Whiz, and without onions, made some on social media fear for his safety.

Scott Walker cut in line at Geno’s to order a cheesesteak with American cheese and no onions. He’s not getting out of Philly alive. — Ethan Booker (@Ethan_Booker) July 28, 2015

Photograph evidence showed that Walker was unable to eat all of his cheesesteak at Pat’s, which the politician visited after eating at Geno’s. He reportedly left his trash on the table.

Scott Walker did not make it through his second cheesesteak. The remnants from Pat’s: pic.twitter.com/YjtTroBFW4 — Matt Gelb (@MattGelb) July 28, 2015

In all, his actions in Philadelphia made some on Twitter question what kind of leader he would make for the country.