Dime in a Dollar Store

Something of little value, not even worth spending a dime in a dollar store for.

You ain’t shit, you ain’t worth a dime in a dollar store…

Quash your Qualms

A cool way of telling someone to relax, everything will be ok.

Omg! I can't find my passport!
Quash your qualms, I have them all in my bag.

Help! I've gone outside with no trousers on and I've forgotten my keys!
Quash yo' qualms yo, it's just a dream.