Jack Jingle
A jingle jack is someone who takes up space for no good reason. To jingle jack is to be a total waste of breath and time, like you're not even worth the air you're using.
My mom says I'm a jingle jack because I never shut up and I'm always wrong.
The teacher called the whole class jingle jacks because we were all talking at once.
He said I was a jingle jack for showing up late and not doing my homework.