An Irishman drags a huge metal box to the Antiques Roadshow in Dublin.
“Where did you get this from?” asks the expert.
“It’s been in my loft for 40yrs. I think it’s a family heirloom” says Paddy.
“Do you have any insurance?” asks the expert.
“No, should I?” asks Paddy.
“Yes you should.” says the expert. “It’s your water tank.”