Spotted...

In terms of English spelling conventions, 'scumo' is actually a correct spelling for /'scuːməʊ/, as in the collective name requested by scumo. In order for it to naturally be pronounced /'scʌməʊ/, as intended by various funny people, it would have to be spelled 'scummo'. :)

the intended pronunciation* is skoo-mo not scummo so the spelling is correct no?

*or at least when I originally said it.