A controversial speaker and businessman who came to the University of Florida for a speaking engagement with the UF Entrepreneurship Club left the event before finishing it — after he threatened to break a student’s neck.

Daniel Pena, known as the creator of the aggressive business strategy Quantum Leap Advantage, threatened the student, Juan “Verse” Lozano, in UF's New Physics Building, 1884-1900 Gale Lemerand Drive, after Lozano called him a fraud during the March 21 event.

Pena is a self-proclaimed billionaire who holds business seminars around the world, according to his website.

Lozano said he had researched Pena's companies. “I don’t think those are real and I, partially, genuinely think they're a fraud,” Lozano said while holding a microphone. “However, you do provide some insights on society and the human perspective.”

In a YouTube video, Pena is seen walking toward Lozano, saying, “Now before I snap your (expletive) neck, give me the microphone.”

The video cuts out after Pena appears to grab Lozano’s shoulder.

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Pena came to UF after his representatives requested the Entrepreneurship Club host him, said Rachael Bunn, the club's president.

“I received a string of emails and in the emails, (Pena’s representatives) were just like, ‘This would be a great opportunity,’” she said. “‘Dan brings in crowds of 500 people.’ We just thought it was a good way to bring in a crowd of people.”

The club did not pay Pena to come.

As far as Bunn knew, Pena's talk would focus on how a college education from a top-notch university alone would not lead to success — it would also take hard work.

Soon after he got there, Bunn said Pena called the crowd, made up of University students and Entrepreneurship Club members, a crude slang term for people with intellectual disabilties and demonstrated how to commit suicide.

The talk ended after Pena made the threat to Lozano, Bunn said.

Pena had taken the microphone from Lozano and gave it to Bunn.

“I said (to the crowd), ‘We really wanted this to be a civil discourse and let everyone express themselves, but if this can’t happen, it has to end,'" Bunn said.

UF Police escorted Pena and 40 followers who showed up in support of him out of the physics building.

"It was nothing crazy," Bunn said.

Bunn said the Entrepreneurship Club brings in speakers to challenge its members’ assumptions about current business philosophies, but she didn't expect it to end the way it did.

“We thought he might say something ridiculous,” she said, explaining she and the club's leadership researched his controversial talks on Youtube.

She said his actions don't reflect the views of the club or UF.

A UF police records clerk said the department does not have an incident report listed under Pena's name.

Lozano could not be reached by Thursday evening.