A duck walked into a pub and ordered a pork pie and half a pint. Naturally the publican was somewhat taken aback and said "You're a duck. You can talk."
"That's right" the duck replied, "now can I have my lunch?"
The next day the duck returned for lunch so the publican asked where he was from.
"I work on the building site just across the road." he replied.
The lunch time visits became routine.

The following a week a circus arrived in town and after setting up the performers came to the pub for a few beers. The publican got talking with the circus manager and told him about the duck. The manager was very excited, saying that he thought they would be able to use him so the publican promised to ask the duck if he was interested.

Next day the publican told the duck "The circus down the road is very interested in you and would like to offer you a job."
"Hmmm," said the duck, "the circus. That's the place with the animals and the big tents isn't it?"
"That's right." the publican replied
"And they want to offer me a job?"
"Yes."
"Why?" the duck enquired "what do they want a bricklayer for?"