Every person has his own special words and expressions like the American expression "on the wagon". It means a person who no longer drinks whisky, beer or other kinds of alcoholic drinks. The "wagon" is a water wagon. In other words, a drinker has decided to change from alcohol to water. An Oklahoma newspaper wrote about a man who had a history of heavy drinking on America's Fourth of July holiday. Said the newspaper, "We believed that his experience had lifted him onto the water wagon, but he was even drunker the next Fourth of July." In the early 1900s, many Americans joined in a campaign to make alcohol illegal in the United States.