Jerkenheimer 

One who exemplifies the qualities of a "jerk"

"Jen's brother is such a jerkenheimer, why won't he ask me to prom?"

Jerkenheimer by Mergeman March 11, 2003

jackenheimer 

a term used while experiencing road rage. a person that acts like an idiot, and probably pisses you off.

Get out of the way, jackenheimer!

jackenheimer by L. King May 23, 2006