Love it when South Africans say "yaaah" in an almost exaggerated dutch way. Sounds so strange.
Speaking from experience?
The one that bugs me is the street talk of kids who speak perfectly normally in front of their parents. I hate being called son by someone younger than me and bruv by someone old enough to be my dad! I hate blud and shanking and all the gonads I have to hear dribbling out of these pseudo gangsta rapper, k Swiss wearing taco mouths. The accent makes girls sound dumb and like they need a good scrub.
Absolutely ridiculous, just makes me see red the second I hear it. It's not even an accent, it's an affectation. See that thing that makes the room get brighter at night? It's a light-not a laaaht.
As regards the Scouse accent, doesn't bother me at all but it sounds incredibly camp, all Scousers sound like Holly Johnson to me. Genuinely don't mind any British accents but English spoken in heavy French (Wenger anyone? The **** sounds like he's blowing bubbles when he talks) or Italian accents by people who consider themselves fluent really winds me up, that I guess though is down to the quality of their English teacher rather than the individual themselves though.
I hate southern (US) accents. What I dislike even more is when I read emails from southerners who write "y'all" in their correspondence.
Has to be yorkshire accent. My grandad had that accemt and got on my tits.