It was not created by the Scottish, by men in the United States to express their sexuality, by Jay Z (lol yes, people actually say this stuff), the unintelligent, by teenagers, or younger children. The word "swagger" was made by Scandanavians as early as the 1530s, but Shakespeare's use of the word gave it a new meaning (as early as 1590).
Many hate this word because they believe that black rappers made it, and so many people use it so often. It compels them to get on the internet with the sole purpose of bashing others for using the word.
It's very sad how so many people who insult others for using this word don't understand the word's origin, nor the basics of any language... As time passes, languages evolve.
If you think I'm wrong, use the internet to learn something. Do your own research, don't take my word for it.
swaggering now: shut the door, I pray you. King Henry IV, part II: II, iv
swaggering accent sharply twanged off, gives manhood Twelfth Night: III, iv
Keeps wassail, and the swaggering up-spring reels; Hamlet: I, iv
He, 'no swaggering companions.' there comes none King Henry IV, part II: II, iv
Hang him, swaggering rascal! let him not come King Henry IV, part II: II, iv
By swaggering could I never thrive, Twelfth Night: V, i
swaggering, by my troth; I am the worse, when one King Henry IV, part II: II, iv
Darrel: You got so much dick in your ass
Assface Magee: Fuck you, SWAG
Me: 'That's because you're a fucking retard trying to be like the rest of the try hards thinking their dumb ass have swag.'
The word quickly made its way to the states and has ever since become the catchphrase of douchbags and tools everywhere.
Person 2: "You're a dick"