As a pig loves marjoram simile
Used to say something is unlikely to happen
You hope you will pass the exam without studying? Sure as a pig loves marjoram!
To have a likelihood of achieving something.
If someone does not have a prayer, they have no chance of succeeding.
This idiom is believed to be attributed to the Roman poet Lucretius, who wrote that "swine shun marjoram."
A problem or difficult circumstance
I'm short-sighted, so forgetting my glasses is a real hair in the butter for my sight.