Insult, to be used when one clodhopper is not quite enough, and user wishes to summon the image of writhing heaps of clodhoppers, not doing anything useful.
Someone who has a certain love for cocks that have more girth than length (chod)...
But has reputation for fickley moving on from one man to the next purely for this reason... Hence becoming a "chodhopper" Not to be mistaken with "clodhopper" which is simply a hefty shoe or boot...