Final answer:
The phrase 'Taryn was in hot water' is an idiom that means to be in trouble and has nothing to do with the literal meaning of the words.
Step-by-step explanation:
The phrase 'Taryn was in hot water when her parents found out she had lied to them' is an example of an idiom. An idiom is a phrase or expression that typically cannot be understood by the literal meaning of the individual words; it has a meaning that is understood by speakers of the language to mean something quite different from what individual words of the phrase would imply. 'In hot water' means to be in trouble or in a difficult situation. This does not literally mean that Taryn is physically in hot water, but rather, she is facing consequences for her actions (i.e., lying to her parents).