When life throws you lemons, make lemonade

You know it's time to wash your car when you can write words on your windscreen.

My sister recently found someone had written, "I hate you" on the back of her car windscreen.

My immediate response:- So do I

I'm the type that, more than just making lemonade, I'll become a sourpuss as well..

And to that remark I can add other responses like:-

1) Why???
2) Tell it to my face, you coward!
3) Whatever..
4) Get a life!
5) Do I know you??
6) Duh? Like I care..
7) Grow up
8) You are not the first
9) Great.. At least it's mutual!
10) Come again??