No Simp September emerged as an internet challenge in the late 2010s, following the massive popularity of the term 'simp' to describe someone who does too much for a person they like. Much like No Nut November, it serves as a month-long satirical 'boot camp' where participants pledge to stop paying for digital subscriptions, sending excessive compliments, or putting others on a pedestal. The meme typically uses military or propaganda-style imagery to treat the challenge like a serious war effort. It is widely used across social media platforms like Twitter, Reddit, and TikTok to humorously enforce 'king behavior' and self-improvement through brotherhood and digital restraint.