We have an on-call rotation at work, and the on-call person is supposed to handle any problems with our overnight job runs (it's all automated, but there can be failures that have to be addressed in the moment), as well as any other off-hours work, like if the system admin team patches one of our servers over a weekend, the on-call person will have to hop on when they're done and verify that everything is working ok.
On-call runs from 6pm Monday through 6am the following Monday. Nobody likes on-call, it goes without saying, but we all do our part.
Except one guy; when he's on-call, he'll handle the overnight stuff, because that's the core of it, but if anything unexpected comes up, like on a Sunday afternoon, for example, he'll purposely be so slow to respond, someone else will step in to do it (not me).
We self-manage the on-call schedule, which means our manager never knows who's on-call, so when something does happen, he'll just text all of us and say, "Somebody handle this," or worse, he'll text someone directly and say, "If you're not busy, take care of this."
Team culture is such that declining to do something by saying, "I'm not on call, so-and-so is," is viewed negatively, so if someone who's not on-call gets the random text, they feel compelled to address it.
I abhor that. I like order, and I actually schedule my time around being on-call. I won't go to a play or a movie or even out to a nice meal the week I'm on call. I take my laptop with me everywhere. As soon as a ticket comes in, I text everyone and say that I'm working it, since we all get notified and I don't want anyone to think I'm slacking.
All that explanation leads up to this:
Saturday, we had a scheduled maintenance task that required the on-call guy, Thing 1. Thing 1 got online, but there were other issues that prevented the maintenance being done, so it was pushed back to Monday (federal holiday).
Monday is when Thing 2 starts his on-call week.
So, manager sends a text (with no context whatsoever, but that's a separate gripe), and cryptically says, "We'll have to do this Monday." Like a lot of places, "we" equates to "one of you guys, not me" (another gripe for another day), so there's not clear direction whether anyone specifically is being told, or if the assumption is Thing 1 will do it since it was originally scheduled for his week, and we generally like whomever started a task to see it through, or if it'll fall to Thing 2, since it's now set for his on-call week.
One thing for sure, it had nothing to do with me (Thing 3

).
Again, this morning, another manager text, reminding that this is moved to Monday. Second text is manager passive-aggressive way of saying no one has told him who's doing this.
Thing 1 piped up and says he'd normally do it, but he has a previously-scheduled appointment for charity work.
Manager texts back that it should only take about an hour.
From previous conversations, I know what's coming next. He's going to single someone out to do it, and I've got a 50-50 chance of being picked.
So I texted back that it's a holiday Monday, lots of people probably made plans, *including Thing 2, who will be the one on-call.*"
At that point, Thing 2 responded and said he'd cover it.
Now I'm sure I'm on Thing 2's shitlist, but this kind of stuff drives me bonkers (not least of which because I'm the one who usually gets screwed into working off-hours when I'm not on call).
This should have been two emails; one from the manager saying this is coming up Monday, and whomever is on call is doing it, followed by Thing 2 acknowledging it.
Instead, it was about five wishy-washy texts back and forth before I ended it with one of my own.