Back To The Future 2 - I Messed That Up
Marty and Doc have gone to the Marty's house in 2015 to get Jennifer back. When Marty' Mom opens up the pizza hydrator and turns around Marty says "Mom you sure know how to hydrate a pizza". After saying this, everyone is quiet and Marty says " I messed that whole thing up," referring to the line. The scene then cuts and continues to the next conversation.