A man is driving along in the Irish countryside, when he comes to a petrol station, since he's in need of petrol, the man decides to stop. He says to the attendant at the station:
- Fill it up, will you?
The man says:
- Sorry - we're right out of petrol.
So the man considers, and says:
- Well, I'm a bit low on oil, would you mind topping that up?
And the attendant responds:
- Sorry, but no oil either.
The man thinks, and asks the attendant to wash his windscreen, to which he gets the by-now predictable response that he can't do that. The man at this point is fairly mad, so he asks the attendant:
- Just what kind of petrol station is this?
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 blow up the tyres!