The 'I Sell Propane and Propane Accessories' meme originates from the long-running animated sitcom King of the Hill, serving as the signature introduction of the protagonist, Hank Hill. Hank is a dedicated, straight-laced assistant manager at Strickland Propane who takes immense pride in his work, viewing propane as a clean-burning fuel. The phrase became a cultural touchstone because it perfectly encapsulates Hank’s hyper-focused, conservative, and earnest personality. In internet culture, the meme is often used to highlight someone’s unwavering dedication to a specific niche, or it is parodied by swapping 'propane' with modern subcultures, gaming hobbies, or professional specialties. Its longevity stems from Hank’s relatability as the ultimate 'dad' figure who simply wants to grill in peace and provide quality service.