"Kors i Himlen" is a Danish expletive which literally means, "Cross in Heaven" - I don't know for sure the etymology, but assume it alludes to "when you see the sign of the Son of Man in the sky - that generation will see the Terrible Times
Seems I'm not the only nut who has noticed this
if you're not lazy :-) google: cross in the sky
(a word of caution, my anti- virus, blocks the top two results (before*its*news and god*like*productions), so be careful - be sure your anti-virus is up to date - most of the others are either weird or yawn inducing).