Goyness is a term/phrase used to explain how much influence 'Goy' or 'Goys' have on something, a Goy is a term that people of the Jewish/Judaist faith have adopted for 'Infidels' or 'Nonbelievers' making the word 'Goy' a placeholder value for that.
A friend of mine juiced like 600 oranges at work, then proceeded to dump the juice in the garbage (instead of all the pulp).
His brain is always fried from all the goynip he's smoking.