Irish tourists..

Irish tourists..
The tourists are travelling thru the beautiful Irish countryside.
The perol tank is showing low and when they see a convenient petrol station they decide to fill up.
The attendant leaves his cubicle and approaches the car.
"Fill'er up, please?". Asks the tourist
"Sorry - we don't have any petrol." replies the attendant
"Well, I'm a bit low on oil, would you mind topping that up?"
The attendant responds "Sorry, but no oil either."
Bit strange thinks the tourist." D' ya think you can wash the windscreen then?" he asks.
The attendant replies. " No - I can't do that either."
"Well what do you do then? Just what kind of petrol station is this ?" Asks the tourist who is rapidly losing his cool.
The attendant then looks both ways, and very carefully whispers to the man "To tell you the truth, this is just an IRA front."
The man then says "Well, in that case, you can at least blow up the tyres !"