'Rattle' through a demo...
I remember the US office shipping a server to the UK in order to demo a new product. Had a nice shiny shipping case. That turned up dented.
Their machine rattled when I took it out to set it up.
After re-seating a couple of cards that had been flying around the case, attempting to boot it up resulted in disk errors - until I led it on its side.
How it made it through their demo I don't know.