Your: Shows possession.
>Is this your hat?
You're: You are.
>You're going to love this hat I got you.
Lose: Opposite of "win".
>Did you lose your hat?
Loose: Not tight, droopy.
>This hat is a bit loose on my head.
Masterbate: Not a word. The proper spelling is "masturbate".
It's: It is.
>I love your hat, it's cool.
Its: Shows possession.
>This hat has a teddy bear on its front side.
Noone: Not a word. No one is two words. No hyphen required.