A handjob where the one giving the handjob simply holds their hand out and the one receiving it does all the work. The hand is held in a loose circle and is stationary, much like a cupholder.
1. I couldn't even get a handy- all she gave me was a cup holder.
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."