1
A fake nice guy version of a total asswipe who drives you to the brink of screaming into a pillow because you're too much of a chicken to yell at them in front of your mom and your little brother.
I saw that jackwack in traffic and almost ran them over just to make them cry.
My neighbor is a jackwack. He parks his car in my driveway every morning like he owns the place.
My boss is a jackwack. He thinks he's a genius just because he can send emails on a phone.