o rlyz
a swear-filled version of o rly that comes out when you're so fed up with someone's lies you're ready to throw a tantrum
He said he'd clean his room? O rlyz? I swear I'll take his Xbox!
She said she'd stop talking during class? O rlyz? I'll make you eat your words!
He said he'd stop eating my snacks? O rlyz? I'll beat you up!