Sewer gas Sewer gas Sewer gas is a complex mixture of toxic and nontoxic gases produced and collected in sewage systems by the decomposition of organic household or industrial wastes, typical components of sewage. Sewer gases may include hydrogen sulfide, ammonia, methane, esters, carbon monoxide, sulfur dioxide and nitrogen oxides. Improper disposal of petroleum products such as gasoline and mineral spirits contribute to sewer gas hazards. Sewer gases are of concern due to their odor, health effects, and potential for creating fire or explosions. Sewer gas is typically restricted from entering buildings through plumbing traps that create a water seal at potential
There once was a man from Nantucket There once was a man from Nantucket "There once was a man from Nantucket" is the opening line for many limericks, in which the name of the island of Nantucket creates rhymes and puns, often obscene. The protagonist in the obscene versions is typically portrayed as well-endowed and hypersexualized. The opening line is so well known that it has been used as a stand-alone joke, implying upcoming obscenities. The earliest published version appeared in 1902 in the "Princeton Tiger" written by Prof. Dayton Voorhees: Other publications seized upon the "Nantucket" motif, spawning many sequels Among the most well known are: