Morgan is the youngest on The Bobby Bones Show, so sometimes Bones, Amy, Eddie, and Lunchbox make references and she doesn't know them due to difference in age. Some of those references come from popular movies and TV shows before Morgan was born or when she was young.
Lately, Bones has been tasking Morgan with watching, for the first time, the popular things from "back in the day" to see if they are still loved and relatable in the same ways today. This started with Seinfeld, where Morgan had to watch the first 2 seasons. She didn't hate it, but didn't find it as relatable in today's world. Ultimately she gave it a 2.5/5 jackets. Since that assignment was over, she was tasked with watching Back to the Future. She had never seen any part of the movies before so this would be her first time watching it.
Back to the Future was a winner for Morgan. She confessed she had to get over the incest part of it where Marty travels back in time and his mom falls in love with him and they kiss. After she let that go, she really enjoyed the movie in its entirety. She also noted that several of the fashion trends then are coming back today so that was cool to see. She ended up giving the movie a 4/5 DeLoreans, which means she loved it. And so much so that when the movie ended, she admitted she was ready to watch Back to the Future Part II.