as a pig loves marjoram

as a pig loves marjoram

Very unlikely to happen; improbable. The phrase is usually attributed to the Roman poet Lucretius, who wrote that "swine shun marjoram." Considering that you haven't handed in a single assignment this semester, you're getting an A in this class as surely as a pig loves marjoram!
See also: love, pig
Farlex Dictionary of Idioms.
See also:
  • (as) sure as eggs (is eggs)
  • not tonight, Josephine
  • et tu, Brute?
  • eggs is eggs
  • a penny for them
  • in the unlikely event of
  • in the unlikely event of (something)
  • Give me liberty, or give me death!
  • great minds
  • great minds think alike