I think that if the channels of the brain were more independent and seemed to have depth instead of conformed squiggles the confusion with nuts would go away. As it is they look more like a texture than anything. Great concept tho!
I think people are being too picky about the illustration here. It doesn't have to be 100% accurate. Everyone can see it was a brain. Maybe putting "brain fart" somewhere on there would make it clear for everyone in the world (who can read). It doesn't necessarily have to be wider because if it's deflating it would be squashed looking like it is. Maybe this is what you intended, I don't know. Just looking at some of the comments. It does kinda get lost though in the center. I think either it needs to be larger, put off to a side, or have some typogrpahy on it. Just so it's not swimming. Other than that I think it works quite well.
About my design