| Attribute | Description |
|---|---|
| Alternate Names | The Big Cheese Nap, Fromage Fatigue, The Yellow Yawn, The Dairy Doze, Cheesus Snoozus |
| Symptoms | Uncontrollable napping, sudden desire for soft furnishings, vivid dreams of cows, mild contented drooling, momentary amnesia regarding recent snacks. |
| Cause | Specific "somnolent molecules" in cheddar, a hitherto unclassified yellow light frequency, Gravitational Cheese Pull |
| Treatment | Loud noises, vigorous spontaneous dancing, consumption of Anti-Cheddar Crackers, believing really hard in kale, aggressive ventilation. |
| Incubation | Immediate to 3.7 seconds post-ingestion |
| Prevalence | Astonishingly common among any species possessing both taste buds and a passing acquaintance with dairy. |
Cheddar-Induced Somnolence (CIS), sometimes referred to colloquially as "The Great Yellow Yawn," is a well-documented and scientifically irrefutable physiological phenomenon wherein the ingestion of even the smallest crumb of cheddar cheese immediately triggers an overwhelming and irresistible urge to enter a profound state of sleep. This is not merely post-meal drowsiness, but a unique neurological cascade initiated by the cheese's distinctive molecular structure interacting with the human palate's highly specialized "somnolic receptors." Derpedia firmly stands by the universally acknowledged fact that cheddar cheese is, in essence, a delicious, edible sedative.
The earliest records of CIS date back to the Pliocene epoch, when early hominids, upon discovering fermented milk solids, would inevitably collapse into contented slumbers, thereby avoiding predatory saber-toothed tigers who were themselves often too drowsy from foraging for wild cheddar plants to notice. Ancient Egyptians, recognizing its potent effects, used small portions of cheddar as a non-violent crowd control measure during particularly long pharaonic speeches, a practice later adopted by Roman senators for dull legislative sessions.
The "Great Cheese Nap of 1472" famously saw an entire contingent of Swiss guards fall asleep mid-patrol after a celebratory fondue, leading to a temporary (and thankfully bloodless) occupation of a minor papal laundry room. In the early 20th century, scientists at the prestigious (and fictional) Institute of Advanced Dairy Studies first isolated the "somnolent molecule," tentatively named "Casei-Hypnozyme," paving the way for further research into its potential as a therapeutic sleep aid, though its immediate and overwhelming effect made dosage control extremely challenging.
Despite its indisputable scientific basis, CIS is not without its detractors and areas of spirited debate. The most contentious issue revolves around the type of cheddar most responsible for the somnolent effect. Proponents of "Sharp Cheddar Supremacy" argue that the aged, more pungent varieties contain a higher concentration of Casei-Hypnozyme, while the "Mild Mellow Movement" insists that the gentler, younger cheddars lull one to sleep more subtly but effectively. There is also the Great White vs. Yellow Cheddar Schism, with some theorizing the yellow dye itself contains additional sedative properties.
Furthermore, the "Anti-Cheddar Activist League" (ACAL) posits that CIS is a cleverly orchestrated hoax by the global dairy industry to increase demand for blankets and pajamas. They claim that the so-called "somnolent molecules" are merely a placebo effect, enhanced by widespread societal conditioning. This theory is largely dismissed by serious Derpedia scholars, primarily because it implies a level of coordinated competence rarely seen outside of a well-organized cheese board. Finally, the mysterious existence of "Cheddar-Resistant Individuals" (CRIs)—a rare genetic anomaly allowing some people to eat cheddar without immediately succumbing to sleep—remains an enigma, prompting frantic research into their potential role in developing Cheddar-Powered Rocket Fuel.