I remember you posting about that. That is so funny. I know it isn't so funny to you... I have to hide things from my 18 year old daughter, but it is a little easier. She won't move things around much when she is looking for a snack, so usually just shoving the cookies behind the undesireable food does it. I also have a large pantry and the shelves go up to the ceiling, so I can put things up high where she can't see them. I'm short, but she is shorter.

I have no suggestions for you except buying yourself an inexpensive fire safe or locking file cabinet to keep YOUR snacks in so you get to eat some of them!
OH, and I do one more evil thing. My daughter has severe food allergies, so if I want to get to eat something I make sure it has something she can't eat in it. Heh heh heh. Oh sooooo sorry honey, those are peanut butter cookies. Oh dear, eclairs contain a LOT of eggs. Yes, I am evil.