Knallharte Jungs
- Annu: 2002
- Paese: Germany
- Genre: Comedy
- Studio: ARD, Constantin Film
- Parolla chjave: puberty, toilet, school life
- Direttore: Granz Henman
- Cast: Tobias Schenke, Axel Stein, Diana Amft, Rebecca von Mitzlaff, Nicky Kantor, Axel Milberg