Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input:  

So  small background, I'm a fairly new DM &amp; I run a small homebrew  D&amp;D campaign online. It's run on a discord server with a fair few  people on it, one of which is the target of this story. I was quite new at the time, and very nervous. 

It  was the 10th session of the campaign, and in the last session, we had  finished going through an 'arc' of sorts for his character, with him  shedding his patron connection and becoming a sorcerer (as I said,  homebrew). Before this session, I was hyping up a boss fight with a  warforged gunslinger (basically a robot with a gun), but I had expressly  stated multiple times that this boss, should he win, **Would not kill.** With this in mind, what this player (I'll call him B) really surprised me.

The  session started with the party seeing this boss taking over a small  village, one that was important to B's character, and actually had his  character's mother in (we agreed on this beforehand). Before the session  properly started, I decided to give my players a bit of time to prepare  for battle, I even made it so I couldn't see what they said on B's  request. When they come back, B tells me he's going to spend the entire  party fund on dynamite, then bomb the village. I was surprised, but  thought it was extreme enough to be funny. Oddly enough, only half of  the present party seemed to be into it (I learnt afterwards that one was  uninformed (M), another didn't know what they meant (L, and another was  against it (P)! so it was 2/5 in favor).

Since  I thought he was going to end the fight immediately with an explosion, I  decided to forgo the combat encounter I had. Yeah, it was dumb, but I  was trying to make the session tailored to what the players did. Then B  approaches the village, and instead of using the dynamite, starts  insulting the boss and throwing out spells. I didn't roll initiative  because I thought he was going to just bomb them as soon as it started.  He then starts insisting I roll it, and suddenly bursts out laughing  saying 'I GOT YOU' and he (and the other player who was in on it) say  that they lied. I nervously laughed it off, and tried to get back into  the spirit of the session.

I  honestly couldn't get it together that session. M was now ranting  through text (they didn't like using the mic) about how this was unfair  to do to a new DM, P started apologising in DMs saying 'I had nothing to  do with it', and the others were just rolling with it. I couldn't keep  track of anything that session, the throwoff just messed up my mood too  much. Eventually, they won after 2 hours of battle, and I decided to end  the session there, since I was in a state where I just couldn't  continue. Afterwards, I talk to my players in DMs, B in particular.

&amp;#x200B;

Continued in comments because this is too long.

kicking a player from my D&D campaign for lying to me, as the dm