I want to start off by saying this is not a joke. I am very serious.
Ever sinced the show has started, I realize Lincoln's jump- up personality has gotten more noticeable. And you know what else jumps up? Toast! In a toaster.
But that's not all.
Sometimes Lincoln is selfish and heartless. Kind of like he's an inanimate, electrical object. You know what else is an inanimate, electrical object? A toaster!
And so if you put the pieces together..
Lincoln M. Loud is indeed a toaster. And his personality is the toast.
I rest my case.