Grappas : noun A grappas is an assembly of flowers or fruits worn by peduncles stepped on a common axis.
Release the cluster: Leave me the bunch : leave me alone, leave me alone.
Ah, this one, he doesn't want to let go of my bunch : he doesn't want to leave me alone.
Cluster of five grains: gloved hand (boxing jargon).
Also said for the male sexual organs.