The T-shirt / Pajamas Challenge gained massive traction on platforms like TikTok and Instagram as a way for users to showcase the dramatic difference between their put-together public personas and their cozy, baggy home mode. Typically involving an oversized T-shirt that hides one's silhouette, the challenge highlights the comfort of loungewear through clever transitions or side-by-side comparisons. It has evolved into a relatable internet trope used to joke about how people really look when nobody is watching versus their social media-ready outfits. The meme resonates because it celebrates the universal human experience of ditching restrictive clothing for the ultimate relaxation of pajamas.