"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

You can see other piX here,  here and here Or,

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).