For context I have a son 8 years old with my ex husband 32 let's call my ex Tony. And we will call his wife Kim. We share joint custody of our son. They live in an apartment with 2 other children not including my son. i have knocked on their door to pick up my son and the ganja smell knocks me in the face. My son started telling me that he hated the smell and he has asked them to stop smoking around him. From what my son told me, Tony told our son it's my house I do what I want. After this my son started complaining to me that he felt weird and tired all the time when he was over there. I kept telling Kim and Tony that they need to stop doing it in front of all the kids. Well this is where shit hits the fan I went to drop off my son I've there and again the smell knocks me in my face and there are visible bongs out. Keep in mind Kim knew he was coming at that time. After I dropped him off I called the cops. She ended up getting 3 charges of child endangerment and she hates me for it. The smoking in front of children has now stopped and my son still stays there half of the time. Am I the asshole?