1 definition by Billie eyelish Stan ;)
A Billie Stan is a person that has at least on of these : a poster of Billie a fan account for her or liked every single one of her photos
Casie (me) is such a big Billie Stan that she has a fan account of her and 13 posters of her in her room!
by Billie eyelish Stan ;) June 21, 2019