Yowze need to fuck off back to the Wolverhampton & District Aqualung Society yowze dow.I mean if you’re splitting hairs then the whole sentence is meaningless as Yam is “you are” and “yowze” should be “yow” ie “you” so basically it’s saying “ You are considerably richer than you”.
Youse is more of a scouse or parts of the North East phrase.