Yes, You must not drive with a breath alcohol level higher than 35 µg /100ml or a blood alcohol level of more than 80 mg/100 ml or after seeing a porn movie!
according to a research by Steven Most, of Yale University, and his colleagues,
viewing erotic or gory images causes the brain to stop processing visual input for a period of time, up to 800 milliseconds.
according to the research,
look at a smutty picture and, you will suffer from a temporary condition known as emotion-induced blindness.
Dr Most made this discovery while studying the
rubbernecking effect (when people slow down to stare at a car accident). Rubbernecking represents a serious lapse of attention to the road, but he wondered if the initial reaction to such gory scenes could cause smaller lapses. The answer is, it does. What he found was that when people look at gory images--and also erotic ones--they fail to process what they see immediately afterwards. This period of blindness lasts between two-tenths and eight-tenths of a second. That is long enough for a driver transfixed by an erotic advert on a billboard to cause an accident.
Source:
http://www.economist.com/printedition/displayStory.cfm?story_id=4292593&fsrc=RSS
http://pantheon.yale.edu/~sbm27/pubs.html
http://arstechnica.com/columns/science/science-20050820.ars