Tiffany's friend- "Oh my god, Tiffany! I can totally see her check."
Cheerleader- "Don't hate because your a fuckin' fat ass, Tiffany."
Brandon - "Bruh why you gotta check me!!?"
Me - "Britney you need to be checked for that shirt, it looks like a dirty dishrag"
Advanced users may make a more complex coding system such as check-plus, check-minus, j-check, s-check etc which may be user defined.