1) A term used to depict a time period where a lack of skill, ability, or performance was displayed. It is also used to mock people who "find the cheap way" to play games or perform tasks. This term can be used to many different types of situations.
Examples:
Applied to Work:
Boss: "Damn it Johnson! These papers are NOT in alphabetical order. What is this, Amateur Hour?"
Applied to Video Games:
Player A: "Wow, that kid is using a glitch. I forgot it was amateur hour this time of day."
Mom: "Rodney, your room is filthy. I thought I said clean it."
Son: "I did clean it."
Mom: "Did you clean it during amateur hour or something? This is atrocious!"
Applied to School:
Professor: "The class average was a D+ on this exam...seriously class, is it amateur hour when you all come here?"
EBK stands for "Elite Ball Knowledge." 1 In internet slang, "ball knowledge" originally referred to a deep understanding of football/soccer or basketball, but it has evolved into a broader term for having a highly sophisticated, deep, or niche understanding of any specific topic (such as music, movies, or subcultures).
Person A: "That scene was a direct homage to an unreleased 1982 Japanese indie film."
Person B: "Wow, EBK."