1 definition by von Ratt
A young, loud, boisterous, male prone to excessive alcohol consumption, aggression and immature, obnoxious behaviour. Monkey boys are generally of middle to upper class origin and have a preference for either preppy or jock attire and hairstyles.
Female college students with any level of sophistication avoid fraternity parties because most frat parties are filled with monkey boys.
by von Ratt May 7, 2008