Zarbon182

Before I tell my story i have been a lurker on this forum for a long time and you guys are great! ok on to the bad news...

I'm a straight A student with no legal trouble and a clean record except i smoke alot of pot! Recently I was not allowed to go anywhere or have anyone in my car because my mom discovered i smoked. I'm 18 years old but i still live under her house. In 8 months i leave for college but she has agreed to let me have a lot more freedom if she can drug test me anytime she wants.

I know i sound like a horrible son but im thinking about subbing with my friends urine who is clean. Shes only buying a test from Walmart and told me today that she will test me tomorrow! What is the most convienent way that i could keep my friends urine on me at all times? I doubt that she will watch me as i pee so subbing shouldnt be a problem. And since its a home test i doubt that they will check for temp. Basically I need a simple way of keeping his urine on me at all times. I have thought about maybe like a necklace or something strapped to my leg.. anyone have any ideas?