runt fucker

a specifically orientated situational abuse tirade expletive, to be used solely at the task that has the better of you and perhaps with more emphasis toward the tool itself. It has nothing to do with genetically inferior sentient beings. .Momentary loud sharp cussing as you realize the work your doing doesn't want to play fair.

The hammer deflected off the desired to be hammered object causing it to purposely aim and slip towards your thumb or finger, painfully removing a chunk of skin---runt fucker, may be used after this action has occurred or similar