Ppuing ppuing (뿌잉뿌잉), it was the trend word through 2011 to 2012.
It is charming oneself with two grasp fists shaking up and down with saying the word 뿌잉뿌잉(ppuing ppuing).In the drama "High Kick 3 Strikes Back short leg", one of the actress pose this in order to show the charm , it became famous and also used in many other television programs. In SNS comments or messages when there is no other particular words to say, we can use it as just a lightly word.
When expressed in emoticons, ლ (╹◡╹ლ)