English edit

Etymology edit

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).

Pronunciation edit

  • (file)

Noun edit

porcelain bus (plural porcelain buses)

  1. (slang) A toilet bowl.
    • 2011, Fred Itfru, The Beer and I, page 10:
      With a gut-wrenching heave, I grasped the steering wheel of the porcelain bus and shouted at the top of my voice for 'Hughie' to come and sort me out.