Netflix and Chill is in the month of December and you invite a girl over to your house to watch movies on Netflix. Afterwards y’all get down to business.
A subtle way to lure a girl to come over to your place, initially as just a "friend", so that it can lead to an opportunity of getting intimate with her while something is playing on Netflix. Romantic movies that the girl is interested in watching are ideal for getting her into the mood.
Guy: Hey I'm bored. Wanna watch Netflix and chill at my place?
Girl: Sure buddy! I'll be there soon.