Replying to Mom from hell/Boring weekend

Okay so a while back I got hurt while skiing and I lacerated my lip and fucked up some teeth. Anyways we are here 3 weeks later. My parents are divorced and live LITERALLY across the street from each other. Last weekend my mom was in Cabo and my dad (who skis all the time and coaches ski racing) let me go up on Sunday and I it was the highlight of the month (of course!). So I was getting ready to leave this morning and my fucking mom calls and asks me what I am doing and I told her straight up. "I'm going skiing..." and she freaked out and started tripping out on me. Telling me that the doctors said I couldn't ski for 6 weeks and I told her that is a load of shit. I asked her what she would do if I went skiing and she claimed that she wouldn't pay for college. So now I am stuck here at home with not shit to do.

I plan on trying to ski tomorrow, but I need something to tell her like what I am going to do that is not skiing related so that she doesn't come over here and knock on the door seeing if I am here or not.