One of the benefits at new U. is that there are other Profs. in my little research field. We decided to hold a semi-weekly joint group meeting, and last week was quite an induction.
One of the Profs (Dr. Grumpy) was late to group meeting without warning, so after waiting ten minutes, we decided to proceed without him. He comes in five minutes afterward, and chews us out for starting without him. When I say "us", I mean the other Profs including myself. Dr. Grumpy bellowed, "Never start a Grumpy group meeting with out me! You should have called my cell at the very least." And then he went on about it for another 5 minutes. I was shocked. Was I at a Grumpy group meeting or was I at a joint group meeting? Was I an underling of Dr. Grumpy or a peer? The way he spoke to us was so belittling - and in front of my students! I couldn't believe he would belittle me in front of my own students! And I don't have his cell number, anyways.
He later apologized to my face about his behavior - but he never apologized to my students. I later told my students, "Dr. Grumpy apologizes to you about his awful behavior." (Even though he never apologized to them...) The students sighed and said, "Yeah, he was really scary." Will these joint meetings continue? I've decided that I'll give it one more shot, but if we have another case of disrespect, then I'm pulling my group out.