Alley apple American slang
The phrase means a stone or loose brick found in an alley.
My brother kicked the alley apple when he saw it on the street.
Why do they not clean these alley apples?
The manure of horses
Please be careful if you go to the stables. It has alley apples.
The noun used in The Indiana Evening Gazette in the 20th century.
People tend to like forbidden or illegal things just because they are forbidden or illegal.
He must have believed that stolen fruit is the sweetest, and he, therefore, cheated on his partner.