No, she’s not. She’s a woman. I think this rumor started because of her name, “Stallion,” which is a male horse. She explained on a YouTube video named “Megan Thee Stallion Goes Undercover on YouTube, Twitter, and Instagram | GQ” by GQ that she got her name from the Texas slang definition of the word “Stallion.” According to Megan, guys call girls that are “thick, fine, and tall Stallions in Texas.”