As a general rule of thumb, never cross an Irish woman.
And if her eyes narrow and start flashing, head for the pub.
“'Simon, Simon, behold! Satan has demanded permission to have all of you, to sift you like wheat. But I have prayed for you, that your faith may not fail. And once you have returned, you must strengthen your brothers.' And Simon said, 'Lord, I am ready to go with you, to prison and death.' Jesus answered, 'Before the cock crows, you will deny three times that you even know me.'" Luke 22:31-34