My second time playing Team Fortress 2, I joined some kind of Last Man Standing (one life per round) game. Not really knowing anything about the game, I just ran around until finally it was down to me and a Heavy on the other team. I still had no idea what I was doing as soldier class, so he chased me around a rock in the middle of the map for a solid 30 seconds while I tried to figure out what each of the weapons did. Meanwhile, my teammates are offering advice via mic, mostly saying "WTF! Shoot him with the rocket launcher!"
After I died, I was able to explain to my teammates that I couldn't communicate because my wife was trying to sleep on the couch behind me, so I'd had the mic turned off and the volume down low.