I agree with the pricniple but not the full sentence. It should be more " If you don't have anything nice to say then still say it in a nice way and be diplomatic"
You can express yourself and still be nice about it.
It sounds childish because most people don't need to be told it once they grow up.
In most cases, yes. Or you can just be a rude *******, I guess
It might, but people who follow it generally have a lot less drama to deal with than the "he said, she said" crowd.
Out of the mouths of babes...
Naw, if I have a problem with you, you'll know it. Like you. How dare you come in here and be all... :d i dunno lol :D
Well f@ck you then. ;P<br />
JK, yes it does, but then again sometimes those little sayings really are needed.
For polite company
no I think it's said to keep the sheep in line. dissent always has it's place
It's just used to suppress opinons. You are very right that it's dumb.