The 'His Brain? No. His Heart' meme typically features a medical professional or a scientific diagram comparing the state of a person's intellect versus their emotions. It is widely used to humorously explain why someone makes irrational decisions, usually by revealing that their heart is physically filled with a specific video game, a music artist, or a niche hobby rather than being empty-headed. The template gained traction as a wholesome way to celebrate fandoms or a self-deprecating way to admit to being 'down bad' for something. It perfectly captures the internal struggle between logical thinking and the overwhelming, often funny power of one's personal passions.