In the opposite directions, try these Amercian slang into Cantonese:- 1.) It is a piece of cake. 2.) She is in a family way. 3.) Make yourself at home. 4.) Don't put on airs. 5.) You are talking through your back side.
I think "long time no see" is also a direct translation but gotten accepted by the English society. Another common one that I heard a lot from the elderly is "people mountain people sea"
