What is what does gooner mean?

The term "gooner" is primarily used in two distinct contexts:

1. As a slang term for a fan of Arsenal Football Club: This is the most common usage. Arsenal is a professional football club based in London, England. The origin of the term "gooner" in this context is believed to derive from the club's nickname, "The Gunners," which refers to the club's historical connection to the Royal Arsenal, a munitions factory. Thus, Arsenal fans are sometimes referred to as "Gooners."

2. As internet slang (offensive): In online slang, "gooner" and "gooning" are used to refer to a male's intense arousal and masturbation, sometimes in relation to pornography. This usage is considered very crude and offensive.