The Mac Pro is Apple's high-end cylindrical desktop computer best known for its uncanny resemblance to a common household trash can. It's also one heck of a powerful machine used by creative types to make movies and other types of content that need a high level of computational prowess. It runs between $3,000 and $10,000 depending on the build, and at those prices you'd expect that most people who are able to buy one would treasure the purchase and treat the device with the utmost care.
Not these guys. The RatedRR team is well known for taking products and putting them through torture tests on video. They fire high-velocity bullets at things to see the damage done, dunk electronics in water to see if they still work, and with the Mac Pro, stuff a bunch of C4 into the chassis to see if they could blow it to smithereens.
They used 10 pounds of C4, and needless to say, there was nothing left of the Mac Pro when they were done with it. It's like what I imagine would happen if they had tried to install Windows 8 on it.