An explanation or excuse for someone of Irish descent who screws up.
The Northern Bank robbery, widely suspected to be the work of the Provisional IRA. They stole for too much money and had to dump half of it on the street before their getaway. Why? The Paddy Factor.
Irishman's excuse for doing something stupid; reason for unexplained, odd phenomenons in Ireland or of Irish nature.
Why did Diarmuid come over to the states and start a Chinese restaurant?
It's the paddy factor!