The Green Line Test, also known as the Don't Lean In meme, originated on Twitter as a pseudo-scientific way to analyze the power dynamics of couples based on their body language. The theory posits that the person standing vertically straight (the green line) is the 'alpha' or the one with more power, while the person leaning in towards their partner is the 'beta' or more dependent one. While it started within 'manosphere' circles as serious dating advice, it was quickly co-opted by the wider internet as a parody. Users now use the template to ironically analyze photos of celebrities, movie characters, and historical figures to mock the absurdity of over-analyzing posture.