You can't call someone a loser until you learn how to spell the word loser.
From Urban Dictionary:
looser
A looser is a loser who can't spell "loser".
The o was intentionally doubled to emphasize and exaggerate it. I don't need a spelling lesson from you but thanks. Now please place your hand against your forehead and with your index finger to the sky and your thumb parallel to the deck repeat after me, I AM A LOOSER!