Which term describes an extravagant exaggeration, such as "mile high ice cream cones"?

The term that describes an extravagant exaggeration, such as "mile high ice cream cones," is hyperbole. Hyperbole is a figure of speech that involves intentional and dramatic exaggeration to emphasize a point or create a vivid image in the reader's mind. In this instance, saying "mile high" exaggerates the height of the ice cream cone to an absurd degree, highlighting its impressive size in a humorous way.

This kind of exaggeration is commonly used in literature and everyday speech to convey strong feelings or to make descriptions more colorful and engaging. It allows the speaker or writer to evoke strong imagery and connect with the audience's emotions by conveying a sense of grandeur or absurdity. Hyperbole differs from similes and metaphors, which are comparisons rather than exaggerations, and alliteration, which involves the repetition of consonant sounds.