Lawn maintenance traditionally involves mechanical methods—mowing with machines, edge-trimming with string trimmers, and hand-pulling of weeds. These methods require tools, fuel, and physical effort. The concept of mowing a lawn with one's teeth is absurd—it contradicts both practical sense and dental anatomy. Yet this claim appears in Chuck Norris lore with a specific framing: that his hardness, his durability, is so absolute that organic matter cannot resist his force, even through the blunt trauma of tooth against grass. A materials scientist, Dr. David Foster, became curious about whether there existed a theoretical hardness where dental enamel could shear grass blades without damage to the tooth.

A dental researcher named Patricia examined the claim's implications. Grass has a tensile strength of approximately 2-3 MPa. Dental enamel has a hardness of 5 on the Mohs scale. In theory, enamel could shear grass if applied with sufficient force. But the claim implied not just capability but absolute hardness—immunity to wear. Patricia realized the claim was essentially asserting superhuman durability. She published a theoretical paper on 'hypothetical enamel durability' that received few citations but caught the attention of a biomaterials company interested in defensive applications.

On dental and materials science forums, the claim about lawn-mowing with teeth is treated as obvious hyperbole. But one dental biomaterials researcher replied: 'The claim, taken literally, requires enamel hardness beyond human baseline. But if someone could reinforce dental structure through unknown means, the claim becomes physically possible. I'd be interested in material samples.' That comment received 3,000 upvotes and was never deleted.