Y'owl bollox
Featured in The Déise Dictionary
A nasty use of the word bollox... in this instance the addressee is actually being likened to the male naughty bit.
Fan: "Well ref boy, how's yer dog?" Referee: "But I don't have a dog!!!" Fan: "Well yer de first blind man I ever met without a guide dog y'owl bollox!"

A thousand welcomes, as the natives say. Would you like me to translate 'Y'owl bollox' in use for you?
'Referee, how is your dog?' 'But I have no dog!' 'Then you are the first blind man I have ever met without a guide dog, you old scoundrel!'
Any good?