The initial idioms of the letter Y

You must have mistaken me for someone who gives a	You must lose a fly to catch a trout
you name it	you never can tell
You never know till you try	you never know what you've got till it's g
You never miss the water till the well runs dry	you only live once
You pays your money	You pays your money and you takes your chance
You reap what you sow	You said a mouthful
you said it	You scared the hell out of me
You should be so lucky!	you should know a man seven years before you stir
You can talk!	you shouldn't have
you snooze, you lose	you so-and-so
You the man!	you think
You think you're so smart!	You wait!
You want a piece of me?	you want to start something
You want to step outside?	you weasel
you what	You win some, you lose some