입턴다. 입만턴다. 이빨만 깐다. 이빨까네

입턴다. 입만턴다. 이빨만 깐다. 이빨까네 ibteonda. ibmanteonda. ippalman kkanda. ippalkkane
It means to speak rudely and carelessly. 

It is a vulgar expression used especially to criticize someone who tries to solve a situation with just words. It is also used as a more vulgar expression.

입만 털었네 

이빨만 까네

입털고 자빠졌네 ibteolgo jappajyeossne

이빨까고 자빠졌네  ippalkkago jappajyeossne 

When it becomes more emphasized and cynical, the expression '입털고 자빠졌네 ibteolgo jappajyeossne' is added. Usually, if a conversation continues with this level of strong tone, violence can break out. 

On the other hand, when teeth break or fall out during a fight, expressions such as 옥수수 턴다, 옥수수 털렸다. 옥수수 털린다. 

That is, 옥수수 corn means teeth, and 턴다. 털다. 털린다. means to fall out, shake it off.