I can't help have fat belly fetish.
That's strange. Why do you have such a fetish?
I have a deep need for self-humiliation
Everyone has their own special turn on, and I'm glad you can be open about it. But you need to be careful as not everyone shares the same sentiment as you for such humiliation. Pointing out someone is fat might upset them greatly, and they might not like fat bellies like you do.
I guess, but it is just not about humiliation, I also like to be fat.
Well it is good that you accept that about yourself, but you should be careful about assuming things about other people. Whether they have the same fetish or whether they are okay with being fat. You don't want to make another person sad or angry.