This tag is for questions seeking a single word that fits a meaning. See the "phrase requests" tag instead (or as well) if you seek a phrase that fits the meaning. To ensure your question is not closed as off-topic, please be specific about the intended use of the word.
The American Heritage® Dictionary of the English Language (Fourth Edition) reads: gigolo, n. A man who has a continuing sexual relationship with and receives financial support from a woman. Is ...
(Please note - indeed @Dan Bron came up with the word exposition, which is now used to further clarify the question.) There are many specific terms for different types of corny exposition in films. ...