Bleedin Jokes

Two builders (Paddy and Shamus) are seated either side of table in a rough pub when a well-dressed man enters, orders a Guinness and sits on a stool at the bar.
So Paddy and Shamus start to speculate about the occupation of the suit...
Paddy: I reckon he's an accountant. Shamus: No bleedin way, he's a stockbroker. Paddy: He ain't no bleedin stockbroker! A stockbroker wouldn't be seen dead in here!
The argument repeats itself for some time until the volume of Guinness gets the better of Paddy and he makes for the toilet.
On entering the toilet he sees that the suit is standing at a urinal. Curiosity and the several Guinness get the better of the Paddy...
Paddy: Scuse me sir... no offence meant, but me and me mate Shamus were wondering what you do for a living?
Suit: No offence taken! I'm a Logical Scientist by profession! Paddy: Oh! What's dat den? Suit: I'll try to explain by example... Do you have a goldfish at home? Paddy: Er .. mmm... well yeah, I do as it more...