Video of police tasering a persistent questioner of Sen. John Kerry became an Internet and TV sensation Tuesday, generating fierce debate about free speech and the motives of the college student involved - a known prankster who often posts practical jokes online.

University of Florida President Bernie Machen said Monday's takedown, in which the student loudly yelled, "Don't tase me, bro!" was "regretful." He asked for a state probe of campus police actions and placed two officers on leave. Tasers are a brand of stun guns that administer a high voltage shock to individuals.

The student in the middle of it all, 21-year-old Andrew Meyer, had no comment after he was released on his recognizance on various charges following a night in jail.

But details from his online writings and videos raised the question of whether his harangue during the forum was genuine or some kind of stunt.