Some of my favourites in English.
Chocolate teapot / chocolate fireguard = useless
"My managers as much use as a chocolate tea pot."
Bostin' (more Black country/ Staffordshire area) = Brilliant, awesome the best thing ever. Highest compliment we give.
You might when describing a child say,
"He / she's a little boster" = a good child.
To half inch = to pinch/steal more about a friend borrowing with out asking or nicking (stealing) a chip of a friend/family members plate. Not for serious theft.
"She's half inched my cuppa! (cup of tea)"
Pickled = someome who's drunk.
"He's well pickled"
The Black sheep - someone who doesn't fit in.
I'm English I don't know how many of these are in use in other English speaking Countries.