jackmunch
A jackmunch is the worst kind of person. They’re loud, smelly, and they hum like they’re trying to annoy the entire world.
My friend is a jackmunch. He hums and eats pizza during math class.
The guy who lives next door is a jackmunch. He hums and eats donuts at 3 AM.
My brother says my dog is a jackmunch because it barks and hums at the mailman.