Mick: I've been going to Night Classes every night for 5 months now.

Paddy: Oh!

Mick: For example do you know who Alexander Graham Bell is?

Paddy: No.

Mick: He's the Inventor of the telephone in 1876;..if you took night classes you'd know this.

The next day,

Mick: Do you know who Alexander Dumas is?

Paddy: No.

Mick: He's the author of 'The Three Musketeers.'.....if you took night classes you'd know this.

The next day, once again:

Mick: And do you know who Jean-Jacques Rousseau is?

Paddy: No

Mick: He's the author of 'The Confessions'......if you took night classes you'd know this.

This time, Paddy was really irritated and said:

...And..and.. you Mick...Do you know who Sean O'Reilly is?

Mick: No

Paddy: Weeel, he's the fellow who's been bonking your wife for the past 5 months.....and if you stopped going to night classes...you'd know this!!..