The 'Pretending To Be Happy' meme, often referred to as 'Crying Behind a Mask,' features a simple illustration of a character wearing a smiling face mask while visibly sobbing or angry underneath. While various iterations exist, the most famous version is the 'Smug Mask' illustration that gained massive popularity on platforms like Reddit and Twitter around 2017. It is universally used to depict situations where someone must maintain a positive outward appearance despite internal struggle, frustration, or sadness. It has become a staple for sports fans, retail workers, and anyone navigating relatable everyday ironies.