Freshmen enrolled in Chemistry 131 at the University of Rochester had a rude awakening on the first day of class: Their professor said that most of them would fail.
However, the man at the front of the classroom wasn't Professor Ben Hafensteiner — recently named Professor of the Year in the Natural Sciences, as Gawker points out— but rather a member of UR's prank group The Chamber Boys.
Chamber Boy Patrick pulls off the switch with style, telling his new students "This class is extremely hard. Last year, 55% of this class failed."
Check out the full video of the prank below: