I think this is a pikey or chav word, from the shitty party of England
It's like when you get punched in the nose, you know
? That would be a wounda. But you can apply it to anything that just ain't quite right in either a good or bad way.
Ra: Damn Rezz, did you see the wounda ass on that bint?
Re: Btfo my arse mate, I seens it first!
We just got pwnt, str8 wounda!