A swandog is widely regarded as a mythical creature. The Ancient Greeks believed him to be the greatest salad tosser of all time. However legend has it that he stalks his prey uttering the sound "gary, gary, gary" in a snarling voice.
Nothing like a Swandog to reach the deepest recesses pf your ass!
When someone is swagdope, they're always very cool, and has just done something, to impress a larger crowd of other swagdope people.
Swagdope is something that you can be, but also is something that something can be.