Sounds innocent enough right?  If your kid’s boyfriend/girlfriend asks if they want to come over and “watch netflix and chill” what they may really be asking is if your kid wants to come over and have sex.  I have no idea how this started, but that is what this phrase means in pop culture today.

from urban dictionary:

When your boyfriend/girlfriend asks you to come over to their place and have sex. This is some what similar to a Booty Call but misleading.