A dentist was working on a gentleman's teeth but was rather disturbed by something and just had to ask the gentleman something before he exploded. Excuse me said the dentist.... May i ask you a rather personal question? Yes by all means says the man what's up? Well can I ask you if you had oral sex with you're wife last night? I'm terribly sorry says the man yes I did, I'm embarrassed to ask but do I have a pubic hair lodged in my teeth? No said the dentist you have sh_t on you're nose!