Pronunciation: [am ɪn fˈat sˈɪti] (IPA) 
The phrase "am in fat city" is often used to describe a state of being wealthy or successful. Despite the appearance of the word "fat", the emphasis is actually on the "am" in the phrase. In IPA phonetic transcription, the word would be spelled /æm ɪn fæt ˈsɪti/. The stress falls on the first syllable of "am", making it more prominent and helping to convey the intended meaning of the phrase.
The phrase "am in fat city" is an idiomatic expression primarily used in American English to convey a state of happiness, contentment, or a feeling of prosperity. The term "fat city" serves as a metaphorical representation of a place or mental state where one is basking in abundance or good fortune.
When a person says they are "am in fat city," they are essentially asserting that they are currently in a fortunate, advantageous, or highly desirable situation. It implies a sense of accomplishment, success, or fulfillment. The phrase may be used to describe a variety of scenarios, such as achieving personal goals, experiencing financial prosperity, enjoying great relationships, or even simply feeling a general sense of well-being.
The expression has its roots in mid-20th century American slang and gained popularity in the 1960s and 1970s. It is typically employed in informal or colloquial settings to communicate a positive outcome or state of being. The emphasis is on the state of satisfaction or contentment one feels in their present circumstances.
Overall, "am in fat city" is an idiomatic phrase used to indicate a state of happiness and fulfillment resulting from various life circumstances being particularly favorable. It portrays a sense of prosperity and gratification, suggesting that the individual is experiencing a period of exceptional luck or success.
