As crooked as a corkscrew.

　　Full of guile ( tricks ) .

　　As crooked as a dog's hind leg.

　　As tricky as a monkey.

　　eg：Do not trust Robert who is as crooked as a corkscrew.

　　同义词：老奸巨猾 As cunning as a fox.

　　反义词：诚实可靠 Fair and square.