Just a tap on the shoulder

A British passenger in a taxi in Dublin leaned over to ask the driver a question and tapped him on the shoulder. 
     
The driver screamed, lost control of the cab, nearly hit a bus, drove up over the curb, and stopped just inches from the edge of the bridge over the Liffey. 
     
For a few moments everything was silent in the cab, and then the still shaking driver said, ‘I’m sorry, but you scared the divil out of me.’ 
     
The frightened Brit apologized to the driver and said he didn’t realize a mere tap on the shoulder could frighten an Irishman so much. 
     
The driver replied,  ‘Will the Saints in Heaven forgive me? it’s entirely me own fault. Today is me first day driving a cab………….. 

I’ve been driving a hearse for the last 25 years.’