1
general::
Also, all the thing. The current or latest fashion, with the implication that it will be short-lived, as in In the 1940s the lindy-hop was all the rage. The use of rage reflects the transfer of an angry passion to an enthusiastic one; thing is vaguer. [Late 1700s] These terms are heard less often today than the synonym THE THING.
American Heritage Idioms
2
general::
Phrase(s): all the rage
Fig. in current fashion; being a current fad. • A new dance called the "floppy disc" is all the rage. • Wearing a rope instead of a belt was all the rage in those days.
McGrawhill's American Idioms And Phrasal Verbs