Sure as God made little green apples phrase informal
Meaning absolutely certain or without a doubt
I am as sure as God made little green apples that three is the right answer for that Math question.
Peter is as sure as God made little green apples that he's doing his task the right way.
That's absolutely right.
Totally certain.
With absolute certainty; decisively
You can be absolutely certain that something is true or will occur.
“Little green apples” has become the more popular form of the phrase which has several vesions such as as sure as God made apples, and the good Lord made green apples. A source said that the idiom "As sure as God made little green apples” has been cited in print since the 19th century.
Used to allude that the last force, problem or burden which is seemingly minor and small causes a person, system or organisation to collapse or fail
Her husband's violent act last night was the straw that broke the donkey's back and she left him