A dentist pulled out a hypodermic to give his patient a painkiller. ‘No way! No needles! I hate needles,’ the patient said. So the dentist started to hook up the nitrous oxide and once again the bloke objected. ‘I can’t do the gas thing. The thought of having the gas mask on is suffocating me!’ The dentist then asked the patient if he had any objection to taking a pill. ‘No problem,’ the bloke said. ‘I’m fine with...