In the interests of road safety, one of the rules for registering .us domains is that no mention of outlandishly sized mammary glands is allowed.
The maximum size of breasts that can be referred to in .us domains is 36C with Wonderbra cup reinforcements.
The people in charge of administering .us domains tried to pass a ruling that you can not even refer to the sound that people make when they SEE very large breasts, but so far have only disallowed AOOOGAH-AOOOGAH.us because it is so clearly provocative.