How to explode a hard drive

I know this isn't strictly tech, but I felt it's the best place for it.

People talk (on 4chan and such places) of raids by the police on their house to recover hard drives due to suspicions of CP or of pirated content.
I was wondering if anyone knew of a case where someone actually managed to destroy their Hard Drive, either remotley or before anyone could get to it, or any stories of the sort.
Could it hypothetically be fitted with some sort of... remote water filling thing?
Post anything relevant please.

>>41
More precisely, thermite uses a chemical reaction in which powdered aluminum and powdered iron oxide become aluminum oxide and molten iron.  It doesn't explode, but it can spatter a bit--it's a very energetic reaction.  The molten iron it produces is literally white-hot and you can't look at it directly without goggles because it hurts your eyes like staring at the sun.

If there is any trace of moisture present on any surface it touches, it'll instantly flash-vaporize into steam.  That can cause the molten iron to spatter and spray further than you might expect.

Thermite is dangerous stuff and in my opinion it's STOOPID to play with it.