The 'Expecto Patronum' meme is inspired by the iconic defensive spell from J.K. Rowling’s Harry Potter series, used to summon a spirit guardian against soul-sucking Dementors. In internet culture, the template typically features Harry Potter casting the spell to repel personified versions of life’s greatest annoyances, such as unpaid bills, existential dread, or impending deadlines. It became a staple of the Potterhead community before crossing over into mainstream meme culture as a universal symbol for finding a 'happy thought' or a solution to overcome negativity. The imagery of the bright, stag-shaped Patronus clashing with the dark, hooded Dementors provides a perfect visual metaphor for hope triumphing over despair.