L.U.P.O.S.
A human who’s so useless they could be the reason why the moon fell out of the sky.
You're L. U. P. O. S. You fell asleep during the meeting.
That kid is L. U. P. O. S. He didn’t even finish the math problem.
You're L. U. P. O. S. You’re the reason the team lost the game.