40 Days and 40 Nights (2002)

a student from san francisco, ditched by his girlfriend, retaliates by hanging out with lots of different girls but then, suddenly seized with hallucinations, falls into a crisis of values ??and decides to 'purify his soul', giving up sex for duration of lent. just at that time, during a night expedition to the laundromat, he meets the most interesting girl he has ever seen and falls in love with. in short, he has visions of older people and naked women everywhere and, to complicate matters, a group of friends has every interest in seeing him fail, since he has opened an internet site where you can bet on how much he can keep the vote.