Fair warning, the following paragraph is full of car words so this might not be for everyone.

The photo that gets me in this collection is the image of the cylinder head. I am a mechanic and seeing this photo makes me feel vaguely sick. What I assume has happened is that someone was removing the exhaust manifold and broke one of the studs, they then drilled out the old stud, probably hoping to re-thread the hole and save the day but unfortunately, they flew too close to the sun and drilled a hole into the combustion chamber which has probably ruined the head and quite possibly damaged the engine block. 

An absolute nightmare.