Aidan reminded me of the existence of carbonated milk. That reminded me of a Salon article titled I come to bury Iamcarbonatedmilk.com, not to praise it. It’s about expired domain names and why people register them.
I seem to remember being around when several absurd names were registered, including assbarn.com and the now-defunct mybuttthemovie.com. The motivation in each case quite simple: it seemed like a good idea at the time because we were very drunk. That also explains a lot of stuff purchased from EBay.