GAINESVILLE, Fla. ÷ On Friday night, University of Florida Macroeconomics students piled into their respective test sites for their last opportunity to take their second test.

Carleton Auditorium, which seats 700 students, was close to full. In Carleton, however, test-takers received much more than a test.

Two pranks took place during the exam's duration and one has a professor offering a $500 reward for capture of the pranksters.

"Before the exam, two students walked to the front of the auditorium, dressed in bath robes," freshman Susan Henriques said. "They got on the stage and began singing a mixture of songs in opera voices."

The second incident occurred during the actual test.

"The first prank didn't bother me too much," freshman Reneida Leon said. "It actually relaxed me a little. But the second one really affected the test. Everyone started talking at the same time."

During the test, two students, dressed in Louisiana State University colors, entered the auditorium with a plastic inflatable alligator. They brought the alligator to the stage and started screaming and pretending to beat up the alligator.

Henriques said the students screamed "We hate UF," and the test proctors struggled to keep order.

UF economics professor David Denslow admitted test takers were "clearly disrupted less by the first disruption than the second," but he seeks disciplinary action for both cases.

For the first case Denslow said he would not seek disciplinary action if the students came forth and said it would not happen again. But if the student serenaders do not reveal themselves before the end of the week, Denslow will file a complaint with the university.