It's the channel number of the Sundance Channel on DirectTV. It gained Internet notoriety from a TV commercial starring Weird Al Yankovic.

Marginalized Orientations, Gender identities, And Intersex. it’s meant to be an all inclusive umbrella term for asexuals, homosexuals, multisexuals, trans people, and intersex people. Alternative to LGBTQIAP+
Alternative to MOGII, easier to pronounce.