(as) useless as tits on a nun

(as) useless as tits on a nun

vulgar slang Ineffectual; pointless. Hey, thanks for the broken wrench—it's as useless as tits on a nun.
See also: nun, on, tit, useless
Farlex Dictionary of Idioms.
See also:
  • nun
  • (as) useless as tits on a boar hog
  • (as) useless as tits on a bull
  • (as) useless as an ashtray on a motorbike
  • talk to hear (the sound of) (one's) own voice
  • talk to hear one’s own voice
  • talk to hear own voice
  • drippy
  • be like talking to a brick wall
  • talk to a brick wall