He couldn't organise a f**k in a brothel
a bad organiser)
If he bought a kangaroo, it wouldnt hop
an unlucky person
I love these two.
Ok, let me think...probably most of the sayings from my language would be funny for you, if I translated them literally.
One example:
English: to be out of the woods (sounds funny to me)
German: to be over the hill
Some that are funny in German, too:
German: Er ist so blöd, dass er brummt.
English, literally: He is so stupid, he hums.
Meaning:
He is VERY stupidG: Du bist doch mit dem Klammerbeutel gepudert
E: You were powdered with a bag full of clothespins.
M:
You are nutsG: Am Arsch die Räuber!
E: Thieves on your ass!
M:
As if!G: Quark mit Soße
E: curd with gravy
M: (That's) nonsense