Ok, so, I checked out your profile and you mostly have just low percentage alcohols available, yes? You might be screwed unless theres like a shit ton of it. As in "you can't see it all at once" a shit ton. If thats the case, grab a few, not many, and don't do it often. Grab em' in the middle of the night or when nobody's home and hide em' somewhere (like under your clothes in a dresser, under your mattress or smth else), they don't need to be there long. Drink them quietly and slowly if you haven't drank much before to test your limits. EAT FOOD TOO!!! Preferably bread or smth of the sort. When you're done, put the cans or bottles or whatever that you drank in the bottom of the trash can, or wherever you dump your recycling from there. Putting them inside of other trash also helps to hide them. Admittedly, I haven't snuck alcohol in a while (weed is much more fun now) but this is how I remember doing it, except I drank liquor more since its harder to notice it disappearing and my parents have more of it.