Spinjoy(gender)

The term "spinjoy(gender)", coined by tumblr user heartfelt-angel, is described as "a gender related to the feeling of joy when you receive or buy something related to your special interest" and is exclusive to neurodivergent (specifically autistic) people

A flag with varying shades of pink stripes that match on each side and a stripe of white in the middle

Sources:

https://heartfelt-angel.tumblr.com/post/656366320434266112/spinjoygender-a-gender-related-to-the-feeling