A farmer is leaning on a gate watching a group of his cows. As he watches, chewing on a blade of grass, the cows slowly work their way towards him. When they reach the gate, he reaches out and ruffles the hair on the head of the nearest beast. Just then, a group of ramblers come down the lane. They watch the farmer for a while and chat to him about the animals, then one of them says 'Would you happen to have the time?' The farmer puts both of his hands on the cow's head and after a short while says 'It be 'arf past two.' 'How can you tell that just from holding the cow's head?' asks one of the ramblers in wonder. 'Well,' says the farmer, 'If Oi move old Bessie's head just a little, Oi can see the clock on the village church.'