The guy in the lower part of the video is taking his time making sure everything is lined up correctly and "just right", little does he know what is about to happen.

At about the :45 mark is when the chaos ensures and the entire shelving unit comes crashing down on him and some innocent female shoppers.

No word on what caused everything to come crumbling down but this has to one of the worst cases of a Party Foul ever.

[Live Leak]