"mmmmmmm....How come?" 

"If anything goes into the mouth, will make  'clean'...? 

If any good thing goes into the mouth, 
then 'God Created body' will admit it, 
use it and will discharge the waste  naturally. 

If any bad thing goes into the mouth, 
then 'God Created body' will resist it 
and will discharge it by anyway, 
that too naturally. 

If any good thing comes out from 
the mouth, 
then it'll be useful to everybody. 

But, if any bad thing comes out from  the mouth, 
then it'll 'spoil' everything. 

So, if anything goes into our mouth, will make us  'clean'! 

Let us not worry about it! 

But anything comes out from our mouth, will make  us 'unclean'! 

If it's good then it's good. 

Or, it'll make us 'dirty'! 

So, let us be cautious about our  'words'! 

Let us try to keep ourselves 'clean'! 

Let us live 'cleanly'!