The man who had a major part in the assassination of JFK. Also, he just happend to be the Vice President under JFK. A prime example of one of the many sociopaths who gain access to seats of power.
The term is used when a person has loaded a Sniper and is going to shoot someone in the head. Originally meaning to electLyndon B. Johnson as president.
"Hey Dickhead, don't letmy ass see you putting Lyndon B. Johnson into office