Ok, I'm not going to judge if this isn't a joke. If you identify as having chocolate as your gender, you're free to do so. Now, I may not understand it, but I'd still support you.
The only time I've came across one of these that I didn't support, is Dreamgender (Dream stans.) There are people who identify there gender as a popular YouTuber. It has even spiraled into sexual identifications as well. Not even that, but there are people who identify as Dreamracial, and Dreamreligious. This can't be healthy.
That and "Dreamsexual" is already taken, as it is used for people who only feel sexual attraction during dreams, or rarely outside of them. That is the Dreamsexual that I recognize.