What is the worst thing you’ve ever said, intentionally or otherwise?

I’ll lead us out: so this was unintentional, but here goes. In my early 20’s, this girl I was dating asked if she could bring her best friend on a day time date we were going on that weekend. After considering, I said “I’ll have to pass, we don’t need a third wheel”. Dead silence. Her eyes narrowed. I got THE LOOK. At this point I’m sweating and starting to panic. She says “you’re a real son of a bitch you know that?” Having no idea what provoked this strong of a reaction I respond “why?” She pulls up a Facebook picture of the two of them and her best friend is in a wheelchair…
What is the worst thing you’ve ever said, intentionally or otherwise?
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