Jacketinal
A jacketinal is something that thinks it’s the king of the jungle and will stab you with fangs, claws, or anything that smells like trouble. It might be small, big, or just plain ugly.
That bug on my arm is a jacketinal. It bit me and said, ‘You’re not welcome here.’
My brother is a jacketinal. He kicked me in the shins and said, ‘That’s for being a nerd.’
That lava monster in the movie is a jacketinal. It melted my face and laughed at me.