Here is what I remember.
Either R or NC-17.
There is a scene in a restaurant where Rachel is there with her dads and Q/P/F are there. She asks them to play along as she introduces them to her dads because she's told them she has friends in glee.
After that, there is a scene at Rachel's house where they bring her a piece of chocolate cake - I think she wanted it at the restaurant but didn't get it for some reason?
Quinn refers to them as her boyfriends and girlfriend.
Anyone? Please and thank you.