Thinking about this one time I apparently had a friend from work but only found out when we were in a fight, that I also didn't know anything about. Her husband came to my home to settle it (politely) woke me up (I was working midnights, that alone caused a lot of misunderstandings for me...) and I misspoke and said something very rude (I only realized what I said after I said it) because it was the first I'd heard about any of this and I was a bit flustered. He didn't listen to me trying to explain I didn't mean it how it sounded, he just looked pissed and left. But... I'd gained, fought with ( though I still don't know why), and lost a friend in what seemed to me the course of a few minutes.
I tried talking to her since but she quit for other reasons and blocked me on Facebook. The funny thing is that anyone who actually knew me, would know I can't talk for **** on a good day, let alone the crap that comes out of my mouth when I'm tired...