The 'Biologically Female Penis' meme originates from a February 2019 tweet by Indya Moore, an actor and activist known for their role in the TV series 'Pose.' Moore posted the phrase to challenge traditional biological essentialism and advocate for a more inclusive understanding of gender identity. The tweet immediately became a viral sensation, acting as a polarizing flashpoint for discussions on trans rights and biological definitions. In meme culture, the statement is frequently used as a 'copypasta' or within screenshot templates to highlight complex gender discourse, appearing in both supportive and satirical contexts depending on the community using it.