Two Irishmen are in a pub playing a game...

In this game they try to guess the occupation of various customers in the pub. A smart looking man with a suit walks into the pub and walks up to the bar and orders a pint. One of the Irishmen says "I bet he's an accountant". The other replies "No no I bet he's a doctor". After a while they both get curious so one of the Irishmen goes up to the man to ask him what he does. "Excuse me Sir, but me and my friend over there are wondering what you do for a living?".
The smartly dressed man replies "Well I'm a logical scientist".
"Whats a logical scientist?" the Irishman replies.
"Well let me ask you a question, do you own a Goldfish?" The scientist says.
"Yeah I do" the Irishman replies.
Scientist: "As you have a goldfish you must keep it in either a bowl or a pond, am I correct?"
Irishman: "Yeah I have it in a pond".
Scientist: "As you own a pond I guess you have a big garden"
Irishman: "Why yes I do"
Scientist: "As you have a big garden you must have a big house"
Irishmen: "Yes it has 5 bedrooms and 2 bathrooms and a garage"
Scientist: "I guess if you have a big house you must have a wife"
Irishman: "Oh yes I do 10 years happily married"
Scientist: "I'm guessing then you have a great sex life"
Irishman: "Oh yes 5 times a week"
Scientist: "And I guess you rarely have to masturbate"
Irishman: "I haven't needed to masturbate in years"
Scientist: "You see that's what a logical scientist does, from asking you one question about a goldfish I've found out about your house, your wife and your sex life"
The Irishman goes back to his friend and his friend says "Well did you find out what he is?" "Yeah he's a logical scientist" "What's a logical scientist?" his friend replies. The first Irishman says "Do you own a Goldfish?" "No" his friend replies. "Well you're a wanker then"