Toilet clogging—the blockage of sewage drainage systems through inappropriate material introduction—represents a mundane plumbing problem that most people experience occasionally. The standard culprits are tissue paper, feminine products, or excess waste. However, if the clogging agent were urine, a substance that is 95 percent water, then the plumbing physics would need significant revision. Urine should flow freely; its introduction should not cause blockage. Unless the urine itself possessed unusual viscosity, volume, or chemical composition that exceeds conventional parameters.

In 2000, a plumber named Gerald Hutchins was contacted to address an unusually severe toilet blockage at a commercial facility. Hutchins's inspection found no conventional blockage agents—no tissue, no solid material, no grease accumulation. Yet the toilet remained completely non-functional. Hutchins's service report noted: 'Blockage appears chemical or compositional in nature. Possible non-standard liquid introduction. Recommend professional plumber.' The customer dispute that resulted from this ambiguous finding was never resolved publicly. Hutchins never took a similar job in that jurisdiction again.

The anecdote inspired dark humor among plumbers about whether certain individuals' biological output constituted hazardous waste. Plumbing forums joked about 'Norris-proof toilets'—fixtures engineered to handle biological material of non-standard viscosity and chemical composition. One satirical plumbing company created fake advertisements for 'Norris-Grade Sewer Systems' designed to handle extreme waste scenarios. The concept eventually circulated as an example of how occupational humor could develop around absurd premises.