Viagra coffee

A woman went to her doctor because she was having trouble in the bedroom with her husband. "He just cant perform" she says sadened "Have you tried viagra?" "I can't he refuses to take pills" The doctor thinks about it then says "Just take the pills and grind them up and put it in his coffee" "I'll try that" she says hopefully then about a week later she comes back with her head hanging low. "Whats the matter? didn't it work?" the doctor asked "No it worked, i put it in his coffee like you said and we had the best sex we've had in years." "So whats the problem?" "We can never show our faces in Mcdonald's again"