Your normal physician is out today, but don't worry! I'm very professional and you're in good hands. I understand you're having trouble with an erection that won't go away? Why don't you sit back and let me examine your cock, so we can make sure nothing's wrong! You seem to be in good condition to me, so I think I'll just take off my lab coat and treat you right here...do come back and see me if this problem occurs ;)