So, I've seen this "centibillionaire" title a few times, but I believe it should be hecto(a?)billionaire if I have my metric prefixes correct.
E.g. a centimeter is a hundredth of a meter, so a hundredth of a billion is 10mil.
Shout-out to !anythingbutmetric@discuss.tchncs.de
Or maybe I'm out of the loop on the joke.
Not really. It's plastic gallon jugs.