Meaning

1 senses
  1. (slang)A toilet bowl.

Origin

From it being imagined that when gripping the sides of the bowl while vomiting into it tha

From it being imagined that when gripping the sides of the bowl while vomiting into it that it's like a bus driver gripping the steering wheel of a bus (a bus steering wheel being roughly horizontal, as opposed to a car which has it up at an angle).

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Forms

plural: porcelain buses
Singularporcelain bus
Pluralporcelain buses

regular

See also

neighbours in the dictionary
porcelain bus — meaning, examples, forms, synonyms | Krumeto