Do you have any friends or biases that act cute to get out of trouble or to get something they want?
You know you do...
Well, here is a handy phrase you can shout at them :)
***please don't tweet this at idols though, it could be taken as rude unless you're face to face and they know you personally^^******
귀여운 척 하지마 - Don't pretend to be cute!
(gwi-yeo-oon cheok ha-ji-ma)
귀여운 - to be cute
척 - to pretend
하지마 - don't do it!
Instead just say: 귀척 하지마!
Or, even better....
귀척노노! - Pretend to be cute, no no!