Jennifer Grey has admitted to "smoking a lot of weed" before doing a sex scene with on-screen love interest Patrick Swayze . But the 64-year-old isn't talking about the love scenes the pair made famous in their hit movie Dirty Dancing, which has been a cult hit since the small budget film was released back in 1987. Fans might not know that it wasn't Jennifer and Patrick's first film together. They were both cast in 1984 movie Red Dawn. The action film follows a group of teenagers who flee to