food amnesia 

When one eats in excess, claiming he or she "forgot" how much they have eaten

Chuck: Who ate all of the cookies?
Guillermo: I only had 3

Chuck: I'm pretty sure you ate them all beacase you were the only one here when they were eaten, it appears you have food amnesia

food amnesia by mansour131 August 19, 2009

Food Amnesia 

The act of forgetting the food one has just previously eaten, made famous in an episode of Spongebob when Patrick Star eats his own food and forgets soon thereafter. This can also lead to accusing other people of eating or stealing ones food.

Terry: Where da fuck is my sandwhich?

Nardo: The one you beasted on, like five seconds ago?

Terry: No, I didn't even take a bite yet!

Nardo: Bro, you have a case of food amnesia

Food Amnesia by DAnteDMCgirl June 24, 2011

Food Amnesia 

This happens when you've just eaten something like... 2 seconds ago... and forgot you ever ate it.

Patrick: Where'd my candy bar go?
Spongebob: You ate it, Pat, it's all over your face.
Me: Major food amnesia

Angel has serious Food Amnesia. She JUST ate that apple core.

Food Amnesia by Katie Marie Bell October 25, 2011