When you're trying to contest baron 4v5 and you have a Jinx split pushing bot. They won't give up the baron for so long that Jinx takes their inhibitor turret. And inhibitor. And 2 nexus turrets. And a nexus. And they still didn't recall or walk back.
When that enemy ADC that's 0-10 is still pushing bot lane and you just go down there and gank them for another free kill.
When there's not a single ward on the whole map.
When someone on your team doesn't even buy any items.
When your Elise forgets she can use R and can't beat the jungle enemies.
When you try to tell your teammates to be careful since Blitz is gonna pull and their reaction is, "There's a Blitz????"
When they hate the fact that you're warding so much that they say they'll AFK if you go to ward again. Can't believe this actually happened to me.
Here's a good one. I tried to explain how a sustain lane works. Saying that I didn't mind taking damage since he took damage and I'd just heal myself anyways. And I was told that this was the stupidest thing my teammate had ever heard.
Edit: Here's another good one. Enemy Orianna respawned. We assume she's going to try to stop us from taking that inhibitor we're about to take. But we don't see her at all. But one enemy complained about what she was doing. I asked them where she went. To my surprise, they actually told me the truth. They said that she went for the blue buff. And we got a free inhibitor. Gj Orianna lol. And it was endgame when everyone was level 18 and the blue buff wasn't even that important at that point.