vertical bathtub

vertical bath

slang A very long, leisurely shower. You need to stop wasting hot water in there. You're supposed to be getting clean, not taking a vertical bath!
See also: bath, vertical
Farlex Dictionary of Idioms.

vertical bathtub

n. a men’s urinal. When I walked into the room with vertical bathtubs, I knew I was in the wrong place.
See also: bathtub, vertical
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • vertical
  • vertical bath
  • wastin
  • time's a-wastin'
  • time's a-wasting
  • sail around
  • piss or get off the pot