I thought it was funny. He thought it was funny. I had even sent him mail earlier saying "I was going to reply-all with 'Screw you, you bastard' but I chickened out."
Then he dared me to do it.
I mean... he's my older brother. He dared me. I had to do it.
Anyhow, I sent it off, laughed, got his reply in which he laughed, and then I didn't think much about it. I was kind of expecting at least one of the many people we've both worked with to reply to me with some sort of eye-roll or stupid gif. These people know me. That mail is in no way out of character.
I got no response.
Jeff, though... Someone sent him mail and asked if I was his ex-wife. His boss sent him mail and asked who I was and whether I knew I'd sent that mail to the director. Apparently a whole bunch of people assumed I was serious and that I hadn't realized I'd hit reply-all.
(The little dog worries that we'll be homeless and starving soon.)
Oh well. I still think it was funny. But maybe nobody from my family will be working there in the new year...