The Chad English Gammon:

I think it was intentional

Shortened to “shouldnt’ve”, for those somehow still confused by this.

What is the point in jokes with some people

Yes, that’s that’s issue with this sentence.

Oy Wot?

first off, in the politest way possible, fuck you

'me chip' isn't correct either

'simple as'... simple as what?

they're not going for correct grammar, they're phonetically spelling the accent and slang