Originally Posted by Hard Head
Dude, wake up. Your dad won't forget. (I know, I'm a dad). Honesty is going to get you alot farther than deceit, especially since you live in their house = their rules. You need to come clean, and do it soon, like today. The longer you wait, the harder it will be. Explain what the substance is, and then tell him why you use it. Be smart, get it out in the open or you risk your relationship with your dad. Don't be a punk, act like an adult and you will gain his respect and maybe he will treat you like an adult. Hey, you might loose your gear this time, that would be your own fault. Hell, he might take it then give it back later, once you show him how mature you are about the whole thing, like not whining if he decides to keep it (maybe he needs it more than you).
If my kid had some s h i t delivered and then hid it from me, I'd fcuking rage on them. Maybe your dad thinks you got something dangerous (guns, explosives, crack, meth, whatever) and just wants to make sure you don't fcuk up your life (and his), by doing something stupid.
All that being said, why are you juicing at your age anyway?
Go, with the package and show him what you are made of, do it now. Man Up or move out. Sorry to sound harsh, this sounds just like the stupid s h i t I used to think I could get away with when I was your age, trust me, NOTHING goes unnoticed.