expression, noun
Vulgar slang for being idle or having nothing to do, literally 'grasping one's balls'. Used mainly by men in very casual, often crude, conversation.
仕事がなくて、一日中握り金玉だった。
I had no work and was just idling around all day.
Standard neutral word for free time or having nothing to do. 握り金玉 is a vulgar slang alternative.
Literally 'grasping one's balls', a vulgar metaphor for idleness. The exact origin is uncertain, but it likely arose as crude male slang.