it is dificult to define a 'spiggy mole child'. it can be one of many things.

1. an insult, refering to someone as a 'spiggy mole child' is a way to call them a dirty reclusive kid.

2. a praise. it someone accomplishes something wonderfully sneaky you can use this phrase to praise them.

3. a term of endearment. 'aw my little spiggy mole child.'

it can always be used as a curse for example if you drop something.

When you eat dirt for the first time and leave your family to build a shack in the woods