Great fishing spot

The Maguire twins had never known the likes before. Only two hours fishing and already the boat was full to overflowing with mackerel.

'Begod, we've struck a rare spot here,' said Mick. 'We must somehow try to remember this exact location for future reference.'

'Why don't we put an 'x' on the back of the boat so we'll know it exactly?' ventured Pat.

'No good,' said his brother. 'We may not get the same boat next time!'