Monkeys (of course) learn how to use money to buy sex.
Using silver discs shaped like Chinese coins, Harvard researcher Keith Chen taught capuchin monkeys to recognize that the discs could be traded for food and treats. Then he introduced inflation and gambling. Read the article if you want to be able to say you’re in the know over the first documented monkey bank heist in natural history, not to mention the first ever instance of monkey prostitution.
Someday soon, this monkey will learn how to pimp.