Not as in regional pronunciation or variation, but both DSs say eg. “smoove” and “viss” instead of smooth and this. Neither DP nor I do it, nor any friends/relatives. I don’t want to give them a hang up about speech by correcting them every time they say anything, but it’s just wrong and don’t want them to grow up still doing it (they’re 10 and 8 now, which suggests we’ve somehow let it slip through for way too long).
Thanks x