Noun. Def: the practice of making economic arguments and describing economic effects in one or two sentences. For the statements to be true or even highly probable, there are usually numerous, gross, and often un-realistic assumptions necessary. Such assumptions are always unstated since they are so unrealistic. When dealing with macroeconomics, one-liner economics is very often likely to be wrong because it commits the fallacy of composition. The practice of one-liner economics is widespread among politicians, radio and TV talk show hosts, Cable TV talking head programs, and anywhere else that special interests want to push a particular policy that often is not in people’s real interests.