Buy a domain name?
While BuyTwitter.com is already taken, of course, there are some available options and I'd be happy to foot the cost.
LetsBuyTwitter.com is available for example.
You can see other .xxx 's that are available here:
BuyTwitter.club seems almost fitting. But I tend to reflexively want .com domains due to years of brainwashing that .com is the only to get ;)