A term that usually refers to romantic Hollywood films with a predictably happy ending, where two people fall in love in spite of themselves and each other, and where every socially awkward situation is - against all odds - perfect.
Chick flick is an offensive term for two reasons. First and foremost, because the equivalent term for the genre of films assumed to draw in a male audience is gender neutral. Second, chicks - an extremely unpredictable slang term for females - prefer seeds to romance and films.