Yawngasms often occur among young women during class in which the boisterous yawngasm breaks the studious silence. Yawngasm are often perplexing and embarassing especially to the female who yawngasmed. After a yawngasm several young males will crack erotic jokes much to the chagrin of the young woman.
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."