HP deliveries weigh heavy on their customers
Considering the size of the packaging and the fact this HP delivery required a wooden pallet to support it, you can only assume that the contents were of a considerable weight, similar to a set of drawers full of lead bricks:
According to the Consumerist it contained a 10ft power cord. Made of some sort of white dwarf matter, surely? It's seemingly par for the course for HP deliveries, however - check out this award-winning example from The Register, finer than any other we've seen to date. Unless you have better? Send the evidence to email@example.com.