"Jump On The Bandwagon"

One euphemism that we use is "to jump on the bandwagon". This means to go along with whatever is "in" or to go with the trends. This originated when Phineas T. Barnum first said the phrase "on the bandwagon" ("jump on the bandwagon" did not come until later). When the phrase "jump on the bandwagon" was actually used it referred to the bandwagons that politicians used to campaign, the reason they used bandwagons was that they tended to grab the attention of the crowd when the traveling circuses would use them. The phrase was used by Theodore Roosevelt when he said "When I once became sure of one majority they tumbled over each other to get aboard the band wagon."(Letters, Roosevelt) That is why "jump on the bandwagon" means to go along with the crowd and to follow the trends.