The best man's stories can be a bit borderline!
A man went to the dentist to have a tooth out. He was horrified when the lady dentist took out a needle and he said to her firmly 'No way - I hate needles.' Will you have a whiff of gas then?' she asked him. 'No I won't - the thought of a mask over my face suffocates me.' 'Well do you mind taking a pill?' she asked. 'No - that's fine' he replied. So the dentist gave him a couple of pills and he swallowed them. 'What are they?' he enquired. 'Viagra' she replied. 'Oh I didn't know Viagra works as a painkiller' he said. To which she replied 'It doesn't but it will give you something to hold onto while I take the tooth out.'