A person who is not only a stupid, ignorant asshole, but who also shouts their small minded, and often dangerous rhetoric loudly and proudly.
"Only consort with people of your own colour, then you can be a completely racist, ignorant, bigoted, intolerant, sociopathic fuck trumpet just like me!!!"
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."