Alexis Rose from Scitts Creek does it all the time, like when she gets frustrated with Johnny she’ll be like “Dad-uhhhhh”?

It seems stereotypically like a “white girl” thing, often affluent

  • It’s an offshoot of the whole valley girl thing from the seventies and eighties, iirc

    At least, that’s the general origin of that specific expression of the over exaggerated brat whine.

    Other versions likely have other origins, and the long extended vowel at the end is likely timeless