Be like that!

[Theseus]

1) This is used after someone has been rude or brusque and means 'Take that attitude/be rude if you mean to show your lack of manners in that way!'
--Laura is studying for her exams so DON'T disturb her!!
--OK. Be like that!

 

[nickel]

First thing that comes to mind because it's very like the English:

Ναι, τέτοια να λες εσύ...

 

[Theseus]

Ευχαριστώ πολύ, Νίγκελ. Καλή σου Λαμπρή.

 

[Cadmian]

-Η Λώρα μελετάει για τις εξετάσεις της, οπότε ΜΗΝ την ενοχλήσεις.
-Καλά. Από ευγένεια σκίζουμε, βλέπω.