On Conan, the fiery actress and social-media sensation recounted the time Eric Stonestreet, who plays her uncle Cameron on the popular sitcom, flipped her the bird and mouthed "Fuck you!"
No, he is not a "hater," of which Ariel has had her fair share on social media. It was just his jocular way of wishing her a happy 16th birthday, and recognizing she is no longer the naive 11 year old she was at the start of the show.
"And then he came over to me and whispered in my ear, and he goes, 'Well, you're 16; you're an adult now so... fuck you.'"
Now 19, Ariel is certainly a fully-formed adult, as made clear by her many racy Instagram posts. See what we mean, below.