Actors with uncircumcised penises play in these movies
43 minutes in episode 5, Max Riemelt is wimming naked in a pool. We get good views at his entired body, especially his torso.
Finally, 48 minutes in that episode, he gets out of the pool. We see his butt as he walks away and then the camera films his big cock in close-up view.
He is having a chubby and his foreskin is retracted, revealing a big duck and massive low hanging balls.