Fooled

A Kerryman arrived up in Dublin and stood looking up at Liberty Hall. A Dubliner arrived on the scene and 'said, 'Look, you've got to pay me £1 for every storey of Liberty Hall you look up at. How many storeys did you look at?'
'Five', said the Kerryman, and handed over £5.
'I certainly fooled him', said the Kerryman to himself afterwards, 'I really looked at ten storeys'.