Hyperbole:
Hyperbole, obvious, extravagant exaggeration or overstatement, not intended to be taken literally, but used figuratively to create humor or emphasis. The most extreme examples of hyperbole occur, not surprisingly, in love poetry, context, moreover, in which hyperbole seems psychologically believable. In Andrew Marvell's " To His Coy Mistress, " for example, the speaker declares:
My vegetable love should grow
Vaster than empires and more slow,
An hundred years should go to praise
Thine eyes, and on thy forehead gaze:
Two hundred to adore each breast:
But thirty thousand to the rest;
An age at least to every part,
And the last age should show your heart.
For, lady, you deserve this state,
Nor would I love at lower rate.