What is the worst response you've ever had? It can be one that was fleeting, or it can be one that you unfortunately must endure on a regular basis.
I think the worst one for me was one of the first I recall having once I found out what synesthesia was. I was on the way to pick up my first cell phone, and I had the number in my hand. I don't know if it was the way it was written, or if the blue pen had anything to do with it because I've never once had that strong of a reaction again. But the combination of the numbers 206 (dusty sky blue, white, dusty medium pink) made my soul cringe and brought tears to my eyes. I can't explain why because I still have that number to this day, and I've never had that hateful reaction to it since.