When all five enemy players ult you at the same time

You know you are fed

No just think of this. Go into an epic team fight all of you coming out with low hp in a 5v4 scenario. Then the enemy karthus re-spawns and you see his Ult going over all of you. That is what makes you cry thinking you can back and get baron and end the game.

damn that kennen ult tho

I don't see a problem