Useful phrase

So I learned a new phrase over Christmas break. My college kids taught it to me, and I'm liking it more and more. Here it is in case you want to try it out.

"Quit harshing my mellow." 

In other words, stop messing with my serenity, disturbing my peace, rattling my cage, invading my quiet, or otherwise impinging on my sense of calm.

There. Go useful that one and let me know what you opinion. :-)