To "goon" can mean different things depending on context:
- As a noun, a "goon" is commonly a thug or a henchman, usually muscular but with little intelligence. It can also mean a fool or a silly, awkward person. In the U.S., it often refers to a hired person who intimidates or harms others. In Australia, "goon" also informally means cheap cask wine (a wine flagon).
- As a verb, especially in slang related to ice hockey or general use, to "goon" means to act aggressively or intimidate others. In internet slang, "gooning" refers to masturbating for long periods without climaxing, entering a trance-like state.
Thus, "to goon" can mean to behave like a thug, to act aggressively, or in some internet subcultures, to engage in extended masturbation. The word has historical roots linking to meanings of "simpleton" or a hired thug and varies by region and subculture.