The term “cojones” originates from the Spanish word “cojón,” which literally means “testicle.” Its use as slang for courage or bravery likely comes from the association of masculinity with these traits, a concept that is prevalent in many cultures. This connection between physical attributes and perceived psychological or moral qualities is common across languages. The exact historical origin point or the first use of “cojones” in this context is difficult to pinpoint, as slang terms often evolve in spoken language before they are recorded in written texts.

In Spanish, “cojones” is a plural noun, and its adaptation into other languages, including English, retains its plural form and its informal, often vulgar connotation. The word’s use to signify courage or boldness reflects a broader metaphorical trend where physical attributes are used to symbolize character traits.