jackbag - A mix of idiot and smelly, brainless, self-centered piece of

A mix of idiot and smelly, brainless, self-centered piece of garbage. It’s also used to describe a stupid move.

My brother made a jackbag move when he tried to run away from the cops in his pajamas.

My friend’s jackbag move was when he tried to ask my crush out during a math test.

My mom called my dad a jackbag because he tried to eat pizza with his hands during a meeting.