adj. phr. , informal In or into the newest popular group or activity; in or into something you join just because many others are joining it. Often used after "climb", "get", or "jump". When all George's friends decided to vote for Bill, George climbed on the bandwagon too. See: JUMP ON THE BANDWAGON.
ON THE BANDWAGON
Meaning of ON THE BANDWAGON in English
American idioms English vocabulary. Английский словарь американских идиом. 2012