iPod Patent: The forbidden fruit was an apple
I was going to paraphrase this Wikipedia entry, but it’s just too good to change:
The term “forbidden fruit” is a popular metaphor that describes any object of desire whose appeal is a direct result of the knowledge that cannot or should not be obtained or something that someone may want but cannot have. The phrase refers to the Book of Genesis, where it is the fruit of the tree of knowledge of good and evil eaten by Adam and Eve in the Garden of Eden. As a result of eating this fruit, Adam and Eve lost their innocence, began to know good and evil, and were exiled from the garden.
Popularly, the fruit has been identified as an apple (perhaps as a Latin pun of ‘malus’ sounding like ‘evil’ and ‘apple’), although the Bible does not identify the fruit as an apple.
The term most generally refers to any indulgence or pleasure that is considered illegal or immoral and potentially dangerous or harmful, particularly relating to such things as human sexuality (underage, extramarital, or otherwise), recreational drug use, and underage alcoholic beverage consumption.