'ello chaps! Luv a cappa teee? Lubbly jubbly.
There's lots and lots of accents. I wouldn't know how to do mine though, but apparently I sound posh to Northerners and get called a Southern Fairy by my mates because they're from The Midlands and The North. From studying 3 years in Derby I've picked up a few of their dialect words, like "cob" for "roll" and I greet people by saying "A'yup m'duck". It's poisoned my southerness.
It's the same with America, you've got your New Yorker, then you've got your guy from Tennessee, your guys from Texas and so on.
If I were to try and one it might be a bit like this:
Yeeeeeeeeeeeeeeeeeeeeeeeehaw ma, I got me wun o'dem sitty boys! Nuh I gon chop 'im up an' make me suhm meeet pie fur t'night!
Of course, I'm just being playful, you don't all sound like Cletus. But if we had a Cletus who was a cannibal, that's what he'd sound like.
For that specific phrase, one might be:
"Go ova theyre an' graab thayat bohx."