Lollipopgender is a direct rejection of gender norms and gender as a concept entirely. Not necessarily a gender identity in and of itself, but may be used to describe a gender experience that is much different from the social norms or expectations of said gender (different from gender-nonconformity) such as lollipopgirl, lollipopboy, lollipopenby, lollipopagender, and so on.
Lollipopgender was coined by Tumblr user Audio Medic (@trenderlucio) on April 18, 2019. He coined the term as a reaction to some transmedicalists invalidating eyr identity and the identities of other GNC people.
Audio Medic designed the lollipopgender flag the same day they coined the term. The colors of the flag mean, in order,
Blue - Boy/masc-aligned
Purple - Other/neutral-aligned
Pink - Girl/fem-aligned
White - Genderless
Yellow - Friendship and solidarity
Orange - Rejection of social expectations
Red - Anger