1. In Medieval Times, the last name Johnson meant John's son so if you were James Johnson, you were James and your father's name was John.
2. Nowadays a Johnson is slang for a man's penis. When I seek a man's penis, I call it a dick or a cock because Johnson can be misinterpreted; plus dick and cock sounds sexier.
1.) Oh I know James Johnson, he's John's son.
2.) I was fooling around with this guy and when I asked him to put his Johnson in my pussy he was confused so I told him it meant his cock.
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