(Photo not representative) - Name of a movie ?? during 2 hours 5 min as i remember.

I need the name of a movie i think italian, where in the last scene a blonde girl with glasses has sex (but simulated) with a guy which has a short and a fake dick i guess... a police stares at them through a huge window like a clock and then jerks off on the window, all during night, it was a weird movie idk how to find it... it was recommended on a pornsite named tukif porno , and can't find it back ... how can i find it ?? The thumbnail that i saw was like above but with a fake dick in a red short