Ok so here goes,
After you talk to the dealer a few times and complete the fetch medicine quest you will get a "deliver package" quest to the girl thats smoking outside the studio. Do that and talk to him again, he will reward you with a hypno cd that you need to use on the living room stereo (under the tv). After that just go around the living room around 18:00 and you get to use the "magic word" on mom with two instruction(doesn't matter what you choose, next time you can choose the other thing).
1) become a cow => leads to disappointing cow costume scene
2) Seduce Emma => leads to (potentially) threesome with mom and Emma. I can not confirm this as when i walk into the room they invite me but he says that he does not have enough energy to handle them both. My energy is at 35, starting from an old save, can i get it higher?