It's erased? Of course it's erased!

As you may now I am a big fan of the Back To The Future trilogy. These photos from Hawaii reminded me of BTTF part 1. Anyone know why?

OK If you don't remember, when Marty goes back to 1955, he disrupts the space time continuum and almost prevents his parents from attending the Enchantment Under the Sea Dance and falling in love, thus threatening his own existence. While he is working to correct the situation, the family photo he has been carrying starts to fade away, with his older siblings disappearing completely from the photo (evidence that he's altered history).

Bonus points if you can pinpoint the part of the movie(s) where the title of this post comes from.