Paddy and Terry are walking home from the pub.
Paddy suddenly falls into a hole left by roadworkers and breaks his leg.
In agony, Paddy shouts up to Terry, "Terry! Terry! I've broken me bloody leg! Call me an ambulance!"
Terry, with no sign of concern on his face, leans over the edge, spots Paddy's broken leg and mumbles "Paddy, you're an ambulance".