As in the United States, in Brazil some license plates are banned. However, if you know someone who knows someone, you can get any plate you want (as long it isn't already taken). Just look at this:

It is a 1957 Willys Jeep, with a Ford Maverick V8 302 engine. The plate GAY 0024 is a double feature, because 24 is the number of the deer in the "Jogo do Bicho". Deer (or "veado", in portuguese) is a pejorative term for homosexual men.

For R$110,000.00 (US$47,000.00) it is worth the price?

Source (portuguese)