That's a piece of cake
That's as easy as pie!
I can do it with my eyes closed
請你客氣點
Who do you think you're talking to?
Don't get fresh with me (get fresh with 大多用於母親對孩子的斥責之時)
等着瞧
you'll see. / Time will tell。
多管閒事
(It is) None of your business.
Mind your won business.
Who asked you?
This has nothing to do with you.
別狗眼看人低
Do I look like a fool?
Who do you think I am?
What kind of a fool do you take me for?
不要告訴別人
Don't tell anybody (about it).
This is just between you and me.
This doesn't leave this room.
This is for your ears only.
學識谷
