The word "彪子" is formed by combining the character "彪", which originally refers to a young tiger or implies fierceness and impulsiveness, with the character "子", a suffix used to denote a person, often in colloquial or derogatory contexts. Together, they create a compound term where "彪" metaphorically suggests reckless or foolish behavior, and "子" personifies it, resulting in a slang expression for someone who acts in a rash or silly manner.