Old European Movie, Cum on the toilet door at school, Image not related

I saw this movie years ago, i think it was 2008 or before, i think it was european movie (maybe dubbed in italian) and all happened in a school, at some point a girl goes to the toilet and start masturbating, and a guy from outside the door jerks off and cum on the toilet door... some scene later a girl licks off the cum from the door, I really am searching this since years now without results, if you have an advice please feel free to share