Bad Strategic Moments:
Ally: "I'll flank them!" - as he runs around past the experience flag, through the fortress, archer towers, and other towers set up there... dying shortly thereafter.
Ally: "I'm going to grab him!" as he runs after a faster demigod, within spit range, for most of the FREAKING GAME. If you aren't catching up, it isn't going to change suddenly... go back to your lane, or spit first. Uggh.
Ally: "Lol-nub, flags are more important than xp" - the teammate who diligently captured any available flag... but was level 3 when everyone else was level 6. Sometimes you need to stay in a lane, or just ask a teammate to cap that flag close to them.
Ally: "Saving for Ring." - Yes, he meant the all father ring. We were about level 8 at the time. He had no kills and 7 deaths, and got his precious ring about a minute before the game ended. Early item advantages should not be ignored.