A gorilla walked into a quiet country pub and putting down a five pound note asked the barman for a pint of best bitter. The barman served him thinking "I bet he's a bit dim" then gave him back .50p in change, then wishing to be friendly said "We don't get many gorillas in here" "I bet you don't" replied the gorilla "If you charge them four pound fifty a pint"
(This jokes so old I will have to put the price up to a tenner).....