Monkey sports is a term that has been coined in the past few years to help explain the behavior of some monkeys. While there are certainly many animals who do what we would consider strange for a monkey, monkeys like this monkey sports. The monkey sports of this type are often seen in the wild.
Why is it weird that people usually use this term? Because in a world where humans are not the only animals in existence, there are many primates that are very curious and sometimes funny. It’s hard to know for sure why people use this term in the first place. Perhaps it’s a way to give an example of a monkey who is not as curious or funny as someone who is.