been racking my brains a bit all I can remember is like you say the first line was
Hang down your head Tom Dooley
Hang down your head and cry
Wigan might have got to Wembley
but for Mickey's try
and the next two lines were
He scored it in the corner
The best try of his life
after that I don't know. two many years of supping common has taken it's toll and the mind's gone blank sorry