Clive has done that rare thing and actually written a folk song because I first heard this in a session down in Cornwall and it had been Devonised - no mention of Wigan but lots of references to Exeter, South Brent etc.
There was a verse about the flasher going into a pet shop and showing off his one-eyed trouser snake which I can't recall but I have been able to reconstruct the verse about the two old ladies which I think would probably go something like this:
Two widows were sitting on the beach
The flasher jumped up and made them screech
One had a stroke but the other couldn't reach
The dirty phantom flasher.
If I sing this in my local clubs in Essex I'll put in local references but will certainly credit Clive as the originator and should we meet I'll certainly buy you a beer.