To be a person who acts with acceptable standard expected from other people. This assumes the person is not "decent" or not "human being".
Synonym with common sense.
Please, be a decent human being and not ruin other people's fun.
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."