Your computer. You built it yourself (because you're not a dumbass who wastes money), opening the case, screwing in the mobo, attaching the GPU, CPU, RAM, Power Supply, what have you, you install an operating system of your choice and you care for it over the years. You upgrade its GPU every know and then, and ocassionally its CPU/motherboard. The contents of the case may change, but in the end it's still your rig, albeit with some new tricks.
In the boxes above, link to other words with square brackets. For example, booty will become booty.rig