The phrase "is in hog heaven" is often used to describe someone who is happy and content, usually due to being surrounded by things they love or enjoy. While it is a colorful and lively expression, there are other ways to convey the same sentiment. For example, one might say "is on cloud nine" or "is in seventh heaven." Other possibilities include "is in paradise," "is in the lap of luxury," "is in nirvana," or simply "is in a state of bliss." All of these phrases convey a sense of extreme happiness and satisfaction, making them suitable alternatives to "is in hog heaven".