He'll hang there till he rots.

Oh for the day when salt rots..

There is an old adage that a fish rots from the head.

The life of the body is a heart at peace, but envy rots the bones.

And finally this week's Ugly person, as the saying goes, Put salt on whatever rots...

And when it dies, it falls to the bottom and then it rots, which means that bacteria break it down.