Funny Comeback

Cop pulls over a man
"Sir id like you to take this breathalyzer test"
Man: " I cant, i have asthma i might have an attack "
Cop: " then i need to take a blood sample "
Man: " No sir, im a hemophiliac, i might bleed to death "
Cop: " Ok, ill need a pee sample "
Man: " I cant do that either officer, im a diabetic, i might get low blood sugar "
Cop: " Fine, just walk this line "
Man: " I cant "
Cop: " Why? "
Man: " Cause im drunk "