RUMBLE! RUMBLE! RUMBLE! What's that sound? It means I'm hungry for a RUMBALL!
1-1/2 cups vanilla wafer crumbs
1/4 cup peanut butter
1/4 cup good rum
1 cup ground walnuts
1/4 cup cocoa powder
Combine all of the above ingredients except powdered sugar. Shape into small balls or whatever size you prefer. Roll in powdered sugar. Store in a tightly covered container.