(Pronounced sw-AM-p, like someone exaggerating a midwestern accent would say it) A male extension of swag. Swamp is something much more powerful than swag, and is only attainable by males. Swamp is the display of extreme manliness and badassery.
In Star Wars-When Leia tells Han Solo "I love you," and he says, "I know." This is the prime example of swamp.