a twinkie
A person who talks too much and lies so much, you might as well just call them a human garbage disposal. They’re full of crap and they’re gonna ruin your life.
My friend is a twinkie. He told me he could beat up a whole football team, and then he cried when he got in a fight with a kid.
My teacher is a twinkie. She told us the Earth was flat, and then she failed the entire class.
My dog is a twinkie. He barked at a tree and then ran away like it was a war.