The short name for a chemical known as methyl mercaptan which is a naturally-occuring but toxic, smelly gas. Its chemical formula is CH4S which is very similar to methane (CH4). Both of these gases are found in farts and the mercaptan is responsible for the stench associated with flatulent activities.
I am paying for eating those boiled eggs for breakfast. I am passing mercaptan and methane with gay abandon.
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