Name of the movie please

[sirishnimmala]

Hi can any one help me with an vintage movie maybe french I don't know but the plot of the movie goes this way
A guy brings his friend home for holidays and the guy has different intentions
Scene 1: the guys fucks his mom in horse shed
Scene 2: the guy fucks his friend girlfriend on the car when he goes to drop her as his friend misbehaves with her
Scene 3: the guy gets to fuck his friend's sister who is a cripple in the woods while she is practicing archery
And it goes on
Can someone please help me i have been looking for it for almost a year now 
Thank you

[RoughGuy]

Movie sounds interesting