system
A chat on subreddit /r/wallstreetbets
human
Pennies wiegh 0.088oz, and are 97.5% zinc and 2.5% copper.  I dont know how to make paper into liquid, but you can turn metal in liquid by applying heat... liquid cash.

gpt
Cash is a liquid asset, as opposed to monetary assets such as property and business. Vast majority of millionaires and people you would consider rich have nowhere near 900k in cash