Line from the movie "Coco"
I am trying to study Spanish with the movie "Coco."

Close to the end, when Miguel is talking to Mama Coco, I think he says
"Mama Coco, mira.. No lo fallas olvidar."
Which (I believe) means "Don't forget him."

How is it different from "No lo olvidas"?
And please give some examples of how the word "Fallar" can be used with other verb?

Thank you in advance!

Question

Line from the movie "Coco"
I am trying to study Spanish with the movie "Coco."

Close to the end, when Miguel is talking to Mama Coco, I think he says
"Mama Coco, mira.. No lo fallas olvidar." 
Which (I believe) means "Don't forget him."

How is it different from "No lo olvidas"? 
And please give some examples of how the word "Fallar" can be used with other verb? 
 
Thank you in advance!

Answer

¡Hola Hana!
I think he said "No lo vayas a olvidar".
Don't forget him> "No lo olvides" Is the imperative form of "Lo olvidas" 
I hope you won't forget him> "No lo vayas a olvidar" comes from "Lo vas a olvidar". 
I believe that "fallar" means... to fail or not working well.
La memoria me falla, no recuerdo nada. 
Mi computadora falla mucho, necesito una nueva.

Here are more examples. http://www.wordreference.com/es/en/translation.asp?spen=fallar

Answer

Looks like I misheard the line! hahaha

Answer

Good question

Evden çıkmadan dil öğrenme fırsatını kaçırmayın. Deneyimli dil eğitmenlerimizden oluşan seçkimize göz atın ve ilk dersinize şimdi kaydolun!