Misery pipes is a colloquial term used to describe car exhaust pipes, especially when they emit thick, dark smoke. There are many synonyms for this term, including exhaust pipes, tailpipes, mufflers, and muffler pipes. These words are often used interchangeably and denote the same thing - the part of a vehicle's exhaust system that removes harmful gases and smoke from the engine. Other less common synonyms for misery pipes include fume pipes, gas vents, and emission tubes. Regardless of the term used, it is essential to ensure that a vehicle's exhaust system is in good condition to avoid polluting the environment and endangering the health of the driver and passengers.