A police officer pulls over this guy who's been weaving in and out of the lanes. He goes up to the guys window and says, "Sir, i need you to blow into this breathalyser tube." The man says, "Sorry, officer - i can't do that, i'm an asthmatic, i do that i'll have a really bad asthma attack" "Ok, fine, then you need to come down to the station to give a blood sample" "I can't do that either - i am a hemophiliac - if i do that i'll bleed to death "Well then we need a urine sample." "I'm sorry but i can't do that either - i'm also a diabetic and if i do that i'll get really low blood sugar." "All right, then i need you to get out and walk this white line." "Well officer i can't do that either!" "Why the hell not?" "Because i'm drunk"