Fig. on the popular side (of an issue); taking a popular position. (*Typically: be ~; climb ~; get ~; hop ~; jump ~.) You really should get on the bandwagon. Everyone else is.Jane has always had her own ideas about things. She's not the kind of person to jump on the bandwagon.
mod. with the majority; following the latest fad. (Often with hop, get, climb, or jump.) Tom always has to climb on the bandwagon. He does no independent thinking.