Final answer:
The phrase is an example of hyperbole, which is an exaggeration used for emphasis, not meant to be literal.
Step-by-step explanation:
The phrase given is an example of hyperbole. Hyperbole is a rhetorical device where exaggeration is employed to create a strong impression but is not meant to be taken literally. An example of hyperbole can be seen in literature, such as in William Wordsworth's 'I wandered lonely as a cloud,' where he uses 'ten thousand' to describe the vast number of daffodils, highlighting the overwhelming impression they made on him rather than stating an exact count.