Charaught came from the tagalog word charot, which means "just kidding" or "joke". Like when you said something that you meant as a joke, it should be followed by charaught.
You're so ugly, charaught!
That's it, I'm quitting. Charaught!
You have something on your face, charaught!
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi