The Cake Horn Meltdown

The Cake Horn Meltdown, also known as the Cake Horn Phenomenon, was a notorious incident caused by Fez going on an irrate rant about a phone call and email from Don Wicklin regardling Fez being banned for the day from speaking to guests waiting for other shows. This caused Fez to become so angry that he flusters his words and says "cake horn" instead of "cake hole" or "horn", completely derailing his entire rant. The incident and the resulting jokes caused #cakehorn to become so popular it trended #1 on Twitter for the day and continued trending the day after. The incident was also picked up on Opie and Anthony the following day, causing it to continue a second day.

Background
On March 3, 2013, Fez began the show by going into rant about an email and phone call from Don Wicklin. According to Fez, he was told not to speak to a certain guest who was expected to show up around 4pm that afternoon. Fez started off by claiming this was due to homophobia but became so incensed that he flustered his words, and instead of saying "shut your cake hole" or "shut your horn", he says "cake horn", which completely derails Fez's claims of discrimination and homophobia. For the most of the remainder of the show, Ron, the crew, and the fans all began making cake horn jokes. Fans immediately jumped on cake horn, and turned it into a hashtag on Twitter (#cakehorn). The more joking about it, the angrier Fez got at everyone on the staff except Ron, who was largely instigating it. Fez also became angry at Sam Roberts for bringing the bit to the O&A show which prolonged the gag for a second day.

Quote (The Cake Horn Meltdown)
"An email and a phone call? Because the email wasn't enough? That somebody is down the hallway talking to Wicki, running their...cake horn, tootin' that..."

Aftermath
On Twitter, #cakehorn trended #1 in the United States for the day and continued trending through the following day. Opie and Anthony also picked up on the bit and continued with it, resulting in an entire second day being dedicated to "cake horn" as a running gag. It returned the following year for the Cake Horn Anniversary Show. The segment is considered one of the most memorable and spontaneously funny moments, on par with The Blueberry Incident.