Final answer:
The phrase 'checking out Rex Walls-style' comes from the memoir 'The Glass Castle' and refers to leaving or exiting a situation in a way that emulates Rex Walls' unconventional, nomadic, and risk-taking way of living.
Step-by-step explanation:
“Checking out Rex Walls-style” refers to a character named Rex Walls from the memoir “The Glass Castle” by Jeannette Walls. In this context, ‘checking out’ means leaving or dying in a way that is characteristic of Rex Walls, who is known for his unconventional, nomadic lifestyle and his determination to live life on his own terms. Throughout the book, Rex exhibits behaviors like leaving situations abruptly, taking risks, and avoiding conformist ways of living. So, when someone says they’re “checking out Rex Walls-style,” they may be implying that they’re leaving a situation suddenly or living life in an unconventional, fearless manner, perhaps without regard for societal norms or expectations.