Une heure de colle (2012)

Aged 18 to 21, young students do not always follow lessons and find themselves sanctioned with hours of detention in the duty room. Sanction? Not really since that's where everything goes wrong. The students manage to subdue the teachers and supervisors with their tails. And when there is no teacher, they suck each other off under the table before ending up with their butts in the air between the rows of tables. Learning about sex is much easier than taking a math class.