The builder gimp hasn't been working hard enough, so he is reminded of the reasons for not slacking off: he gets ballbusted and caned if he isn't productive enough for me! The scaffolding makes a perfect bondage frame to cuff him to in order to administer 24 hard ball kicks and 24 hard cane strokes onto his cold bottom. A stripy bottom and red balls should motivate him to stop slacking in future!